Description:Field of Invention:
The current invention is in field of Hair Colouring compositions. More particularly, the current invention relates to a single composition self oxidative hair colouring product containing an auto-oxidising molecule without having to mix an oxidant such as hydrogen peroxide as a separate ‘developer’ composition.

Background of Invention:
The natural colour of the hair is due to a pigment called melanin. The colour of the hair is not only determined by the amount of Melanin but also on which type of melanin is higher than the other. Melanin is of 2 kinds Eumelanin which is predominant in black or brunette hair and Pheomelanin which is predominant in blond or red hair.

Hair colouring is an age-old craft that entails treating hair with different chemicals. Plants were the source of dyes in the past. Henna (Lawsonia inermis), indigo dye, Cassia obovata, senna, turmeric, and amla are a few of the most well-known. Leeks, black walnut hulls, red ochre, and katam (Buxus dioica) are some further examples.

The 1860s saw the discovery of para-phenylenediamine (PPD)'s reactivity with air, which led to the invention of artificial hair colours. 1907 saw the invention of the first synthetic hair colour by L’Oreal founder Eugene Schuler. The original "Poly Colour" home colour product was introduced in 1947 by the German cosmetics company Schwarzkopf.

Both synthetic and plant-based dyes are used in the multimillion-dollar hair colouring market today.

Modern day hair colours are typically classified as Natural, Temporary, Semi Permanent, Permanent, and Demi Permanent. Natural hair colours have been used since ancient times to colour the hair. The most common used material for colouring is Henna. Temporary hair colours only coat the cuticle and do not penetrate the hair shaft. These typically last only a single hair wash. Semi-permanent hair dyes are small molecules which are able to penetrate the hair shaft. These last longer than temporary hair dyes but not more than 5-8 washes. On darker hair these semi permanent hair dyes need pre-lightening to make the colour more visible. Permanent Hair Colours which are based on oxidative dyes contain (1) A dye precursor, (2) a coupling agent, (3) an oxidant / developer. Most of the cream/gel based oxidative hair colour products in market today are two composition systems i.e. colorant and a developer which require mixing just prior to application. Demi permanent colours are similar to Permanent colours but with low peroxide and no ammonia.

There are three phases in the oxidation dye mechanism: 1) Oxidation of the quinone state from the 1,4-diaminobenzene derivatives 2) reaction of diimine with a coupler chemical and 3) The final dye is produced by oxidising the resultant chemical. Ammonia/Monoethanolamine is the alkaline chemical that opens the cuticle and allows the hair colour to penetrate the cortex of the hair. It also acts as a catalyst when the permanent hair colour comes together with the peroxide. Peroxide is used as the developer or oxidizing agent. The developer removes pre-existing colour, breaks the chemical bonds in the hair, releasing sulphur. As the melanin is decolorized, a new permanent colour bonds to the hair cortex thereby giving the colour to the hair.

As obvious from the name of this Specification, the objective of this invention is to provide a self oxidative single composition hair colour which requires only one composition and one step to give colour to hair. The main advantage of single step/single composition hair colour is the convenience of use and time required for getting desired result.

One such option has been provided in US10952946 filed in Nov 2019. The disclosure of US ‘946 relates to self-oxidative dye having a structure containing at least three oxidizable groups directly connected to a benzene ring, or benzenetriol, which absorbs oxygen in the air to cause oxidation in order to solve the problem of defective or insufficient dyeing occurring due to shortage of oxygen. The composition of US ‘946 requires a very strong alkaline environment to maintain the stability of the dye.

The US ‘946 claims in a ‘limited’ way the use of self-oxidative dye at 0.5 to 4 wt% along with the use of alkaline buffer (0.5 to 6 wt% of ammonium salts) and antioxidant (0.1 to 1 wt% or less than 3 wt%). It does not claim any specific format and the example described in the prior art is a simple aqueous composition thickened using cellulose & Acrylate copolymer. Also, US ‘946 does not teach the optimal concentration of of auto-oxidising molecule when it has to oxidise the precursors and coupling agents in the composition, more so when these are present along with other ingredients especially surfactants, thickners, emollients etc. The self-oxidative molecule can behave as pro-oxidant or anti-oxidant depending on its concentration and the presence of other ingredeints which can catalyse or inhibit the oxidation chemistry.

Objects of Invention:
Therefore, in view of above it is an objective of current invention to provide a self-oxidative single composition hair colouring product which is safer and effective.

It is yet another object of the invention to provide such composition in a aqueous gel, liquid, cream, shampoo or foam format offering the sensorial benefits and convenience of these formats.

It is yet another object of the invention to provide such composition in a multiuse container that is air-tight or does not suck back air after dispensing the product each time. These air tight multi-use containers could be Pump bottle, diaphragm pump bottle, Bag in valve container, aerosol container, or a tube. When used in these. Conatiners / dispensing devices that do not allow air to get in, this single composition self-oxidative hair colour can be used without the presence of antioxidants.

Summary of Invention:
In view of above object, in main aspect the invention provides self-oxidative single composition hair colour.

Optimal concentration of self-oxidative molecule e.g. 3,4,5-Trihydroxybenzoic acid (gallic acid) leads to the desired shade (intensity and coverage) within an intended duration of treatment. Gallic acid auto oxidises in the presence of air and alkaline pH further enabling oxidation of precursors and couplers (oxidative dyes) present in the composition leading to shade delivery on the hair.

It is known that gallic acid can behave both as an anti-oxidant or pro-oxidant depending on its concentration.

The hair colouring composition of the invention contains judicious amount of surfactant which enhances spreadability and also does not significantly interfere with the oxidation chemistry.

The Hair colouring composition of the invention contains a thickening agent to enable ease of application.

The hair colouring composition of the invention is further fortified with effective amounts of cationic conditioners, silicone conditioning agents, emollients, and humectants which prevent possible hair damage caused by dyeing, thereby making hair smooth and shiny.

The composition of the invention can be dispensed as viscous liquid or gel or cream or shampoo or foam.

Accordingly the invention can be dispensed from a tube, sachet, bottle, Bag in valve device, aerosol can or tube, airless device, Pump bottle etc.

One of the aspects of the invention is that the single composition of self-oxidative dye does not require mixing of dye with hydrogen peroxide (“developer”). That is, the formulation is a single-step single composition hair colouring product.

In one of the aspects the dye composition of the invention gives a long lasting colour.

Brief Description of the Drawings:
Fig 1 illustrates the Bag on valve system for multiple use pack for the formulation of the invention.

Fig 2 illustrates airless pump type container for the multiple use pack for the formulation of the invention.

Detailed Description of the Invention:
The invention will now be described in detail in connection with certain preferred and optional embodiments, so that various aspects thereof may be more fully understood and appreciated. However, any skilled person will appreciate the extent to which such embodiments could be extrapolated in practice.

Unless specified otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art, to which this invention belongs. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are described.

Unless stated to the contrary, any of the words “contains”, “containing”, “including,” “includes,” “comprising,” and “comprises” mean “including without limitation” and shall not be construed to limit any general statement that it follows to the specific or similar items or matters immediately following it. Embodiments of the invention are not mutually exclusive but may be implemented in various combinations. The described embodiments of the invention and the disclosed examples are given for the purpose of illustration rather than limitation of the invention.

Further, words like “a”, “an”, “at least” and “the” should be construed to not only cover singular quantities but also plural quantities of the elements immediately following them.

The current invention describes a novel single-step self-oxidative (without the requirement to use hydrogen peroxide) hair colouring composition with no mixing which effectively conditions and moisturises hair and spreads uniformly and quickly. Further, the said composition gives long lasting colour to hair. Whereby, there is no need to mix the dye and developer (hydrogen peroxide) before application of the composition of the invention. It is well known that use of hydrogen peroxide during hair colouring leads to collateral damages.

The hair colouring composition of the invention can be formulated as a viscous liquid, shampoo, cream, gel or foam that can be easily applied to hair, from roots to tips.

More even hair colouring is achieved by the improved spreadability of the hair colouring composition of the invention, which is achieved by the inclusion of the surfactants and the thickener or rheology modifier.

Furthermore, the colouring composition of the invention is enriched by the addition of conditioners, moisturisers, and smoothening agents.

Furthermore, as the oxidant is generated in situ, during the colouring process, interacting with air, which is slower than the fast kinetics of hydrogen peroxide, in forming oxidising species such as, superoxide anion or nascent oxygen or oxidising radical species, the single composition self-oxidative hair colouring composition does not require any mixing prior to application. Also, there is no need to use two different packs as is the case with current oxidative colouring composition and developer composition, and thus this invention saves use of more packaging materials and thus is more environmentally sustainable option.

Furthermore, advantageously, when applied in a shampoo or foam format the composition of the invention does not stain the skin, during the short duration when the hair colour is taken on hand or lathered between the palms before applying onto hair.

Added benefit of single composition of self-oxidative dye is, reduced decolouration of melanin of any non-grey hair, compared to the two compositions where hydrogen peroxide is used in one of the compositions as a Developer. This can be attributed to slow kinetics of oxidising species generated during use and the competition between oxidisation of the dye and decoloration of the hair melanin.

The hair colouring composition in accordance with the above embodiment can be in an aqueous composition (visocus liquid, gel, cream, shampoo,foam)

In an embodiment, the single-step hair colouring composition of the invention comprises of:
a. A self-oxidative molecule;
b. A pH adjusting agent
c. A combination of precursors and couplers used in oxidative hair colours

In accordance with above embodiment , the self-oxidative molecule, is selected from, but not limited to, 3,4,5- Trihydroxybenzoic Acid, Gallic Acid, Tannic acid, pyrogallol, 1,2,4-trihydroxybenzene, 2,4–diaminophenol, 3,5-dihydroxybenzoic acid .

The pH adjusting agent, is selected from, but not limited to, Ammonia/ Ammonium Hydroxide, Monoethanolamine, AMP, Urea, Sodium Hydroxide, Potassium Hydroxide, Sodium Silicate, Citric Acid, Tartaric Acid or like

The oxidative hair dyes used in this embodiment can be selected from those used in conventional oxidative permanent hair dye system. The oxidative hair dyes can be a mixture of precursors and coupler selected from, but not limited to, p-phenylenedaimine and its salts, Toluene-2,5-Diamine and its sulphate salt, N,N-Bis(2-hydroxyethyl)-p-phenylene diamine and its sulphate salt, 2,4-Diaminophenoxyethanol HCl, p-aminophenol and sulphates thereof, m-Aminophenol and sulphates thereof, 4-Amino-2-Hydroxytoluene, 1-naphthol, 3-Methyl-4-Aminophenol, 2-Amino-3-Hydroxypyridine, phenyl methyl pyrazolone, Resorcinol, 2-Methyl-5-Hydroxyethylaminophenol, 4-Methylaminophenol sulphate.

In accordance with the above embodiment, the single step hair colour aqueous composition of the invention has:
a. The self-oxidative molecule preferably in range of 0.1 to 5 wt% , more preferably 0.5 to 3 wt% and most preferably 1 to 2.5 wt%;

b. The pH adjusting agent or combination of pH adjusting agents preferably in range of 2.0 to 10.0wt % , more preferably in the range of 2.5 to 8.0 wt % and most preferably in the range of 3.0 to 7.0 wt %, and

c. The dye precursor is added preferably in range of 1.0 to 15%, more preferably in the range of 2.0 to 10.0% , and most preferably 3.0 to 9.0%

In one of the embodiments, the formulation of the invention may further contain an antioxidant and/or reducing agents. Said antioxidant and/or reducing is selected from, but no limited to, Ascorbic Acid, Sodium Ascorbate, Sodium Erythobate, Sodium Sulphite, Sodium Metabisulphte, Sodium Thiosulphate, Butylatedhydroxy Toluene, Tert- ButylHyroquinone.

If present, the Antioxidants and/or Reducing agents is added preferably in the range of 0 to 1.5%, more preferably in the range of 0.05 to 1% and most preferably in the range of 0.1 to 0.8%.

In accordance with one of the embodiments, the colouring composition of the invention may further comprise any one or more the below:
a. An emulsifier or surfactant or combination of emulsifiers or surfactants, to form a stable cream or shampoo;

b. A thickener or rheology modifier or a combination of thickeners or rheology modifiers, to obtain specific consistency, stability and spreadability of the composition on hair for effective application of dyeing composition in hair;

c. A cationic conditioner or combination of cationic conditioners, to impart better hair conditioning that lasts post-dyeing;

d. A Silicone conditioning agent or combination of silicone conditioning agents, which make the hair soft and smooth, after dyeing;

e. A humectant or combination of humectants, to moisturise hair, during or after dyeing, and

f. An emollient or a combination of emollients to keep the hair soft and also provide smoothness to the product.

The surfactant, in accordance with this embodiment, is selected from but not limited to, (include non-ionic and amphoteric surfactants too) sodium lauryl ether sulphate, Sodium Lauryl Sulphate, Sodium lauroyl sarcosinate, sodium lauroyl isotheonate, Cocamidopropyl betaine, cocamide MEA, Cocamide DEA, Sodium Cumene Sulphonate, Ammonium Laureth Sulphate, Lauramidopropyl betaine, Lauramide MEA, Oleth-5-phosphate.

Said emulsifier or surfactant, or combination emulsifiers or surfactants, is preferably in the range of 0 to 30 wt %_; more preferably in the range of 10 to 25 wt % and most preferably in the range of 5 to20 wt %.

The thickener or rheology modifier or emulsifier , in accordance with this embodiment, is selected from but not limited to, C10-30 alky acrylate copolymer, Acrylates Copolymer, Emulsifying Wax, Cetyl Alcohol, Stearyl Alcohol, Stearic Acid, Cetearyl Alcohol, Ceteareth -20, Steareth-2, Steareth-21, Xanthan Gum, Hydroxyethyl cellulose, Hydroxyproylmethyl cellulose, Guar Gum,

Said thickener or rheology modifier, or a combination of thickeners or rheology modifiers, is preferably in the range of 0.1 to 15 wt %, more preferably in the range of 0.5 to 10 wt % and most preferably in the range of 0.5 to 7 wt % depending on the format.

The cationic conditioner, in accordance with this embodiment, is selected from but not limited to, cationic quaternary conditioners, such as, Guar Hydroxypropyl trimonium Chloride, Polyquaternium-37, Polyquaternium-22, Polyquaternium-53, Behentrimonium Methosulphate, Behentrimonium Chloride, Cetyl Trimethyl Ammonium Chloride, Polyquaternium-10, Polyquaternium-7, Polyquaternium-39, Acrylamidopropyltrimonium Chloride/Acrylamide Copolymer.

Said cationic conditioner, or combination of conditioners, is preferably in range of 0.1 to10.0 wt % more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %.

A silicone conditioning agent, in accordance with this embodiment, is selected from but not limited to, Silicones or silicone emulsion containing, like Dimethicone, PEG-12 Dimethicone, Amodimethicone, Dimethiconol.

Said silicone conditioning agent, is present in range of 0.1 to10.0 wt % more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %.

The humectant, in accordance with this embodiment, is selected from but not limited to, Glycerine, Propylene Glycol, Propane Glycol, Panthenol, and Urea.

Said humectant, or combination of humectants, is in range of, preferably, 0.1 to 20.0 wt %, more preferably 0.5 to 10.0 wt % and most preferably 1.0 to 5.0 wt %.

The emollient, in accordance with this embodiment, is selected from but no limited to Mineral Oil, Isopropyl Myristate, Coconut Oil, Paraffin Wax and Petroleum Jelly

Said Emollient, or combination of emollients, is preferably in range of 0.1 to 40.0 wt % more preferably in the range of 0.5 to 25.0 wt %, and most preferably in the range of 1.0 to 1.5 wt %.

In the case of aqueous composition, the water content can be preferably from 10.0 to 90.0 wt % of the composition, more preferably 30.0 to 70.0 wt % and most preferably 50 to 60.0 wt %.

In accordance with above embodiments, the pH of the composition is preferably 6.0-11.0, more preferably 8.5 to 10.8, and most preferably 9.0-10.5

The duration of treatment, rather the residence time of the composition on hair can be preferably from 2 minutes to 60 minutes, more preferably 5 minutes to 30 minutes, and most preferably from 10 minutes to 20 minutes.

In one embodiment, the hair colouring composition of invention is packaged in an airtight, multi-use pack to prevent the self-oxidative dye from getting oxidised. This implementation protects the composition from oxidation since the device prevents air from being drawn into the pack. With no loss of end-benefit, this invention guarantees that a stable composition is dispensed each and every time the user wishes to utilise it. Also, in this case there is no requirement of antioxidants or reducing agents in the composition enabling the shade development faster on hair.

In accordance with one of the embodiments of the invention, the composition of the invention can be formulated as an aqueous liquid for direct application to hair. Accordingly, the aqueous formulation for direct application to hair would comprise:
a. a self-oxidative molecule preferably in range of 0.1 to 5 wt% , more preferably 0.5 to 3 wt% and most preferably 1 to 2.5 wt%;

b. a pH adjusting agent or combination of pH adjusting agents preferably in range of 2.0 to 10.0wt % , more preferably in the range of 2.5 to 8.0 wt % and most preferably in the range of 3.0 to 7.0 wt %, and

c. a dye precursor is added preferably in range of 1.0 to 15%, more preferably in the range of 2.0 to 10.0% , and most preferably 3.0 to 9.0%

In accordance another embodiment, the composition of the invention can be formulated as a Shampoo, whereby the shampoo would have following composition:
a. The self-oxidative molecule preferably in range of 0.1 to 5 wt% , more preferably 0.5 to 3 wt% and most preferably 1 to 2.5 wt%;

b. The pH adjusting agent or combination of pH adjusting agents preferably in range of 2.0 to 10.0 wt % , more preferably in the range of 2.5 to 8.0 wt % and most preferably in the range of 3.0 to 7.0 wt %;

c. The dye precursor is added preferably in range of 1.0 to 15%, more preferably in the range of 2.0 to 10.0% , and most preferably 3.0 to 9.0%;

d. an emulsifier or surfactant, or combination emulsifiers or surfactants, preferably in the range of 0 to 30 wt %_; more preferably in the range of 10 to 25 wt % and most preferably in the range of 5 to20 wt %;

e. a cationic conditioner, or combination of conditioners, preferably in range of 0.1 to10.0 wt % more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %, and

f. a silicone conditioning agent is present in range of 0.1 to10.0 wt % more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %.

In accordance with one of the embodiments, the shampoo can be packed as an aerosol generating foam, bag in valve dispensing device or airless pump or a sachet.

The Aqueous gel or cream can be packed in a sachet, an airless pump or a bag in valve device. Said cream has below composition:
a. the self-oxidative molecule preferably in range of 0.1 to 5 wt% , more preferably 0.5 to 3 wt% and most preferably 1 to 2.5 wt%;

b. the pH adjusting agent or combination of pH adjusting agents preferably in range of 2.0 to 10.0wt % , more preferably in the range of 2.5 to 8.0 wt % and most preferably in the range of 3.0 to 7.0 wt %;

c. the dye precursor is added preferably in range of 1.0 to 15%, more preferably in the range of 2.0 to 10.0% , and most preferably 3.0 to 9.0%;

d. a thickener or rheology modifier, or a combination of thickeners or rheology modifiers, is preferably in the range of 0.1 to 15 wt %, more preferably in the range of 0.5 to 10 wt % and most preferably in the range of 0.5 to 7 wt %;

e. a cationic conditioner, or combination of conditioners, is preferably in range of 0.1 to10.0 wt % more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %, and
f. an emollient, or combination of emollients, preferably in range of 0.1 to 40.0 wt % more preferably in the range of 0.5 to 25.0 wt %, and most preferably in the range of 1.0 to 1.5 wt %

In accordance with one of the embodiments, the airtight, multi-use pack can be but not limited to a diaphragm pump, aerosol pump, or a “bag on valve” pump. Preferably, the airtight, multi-use pack is a “bag on valve” pump device, as the product and the propellant do not come in contact with each other. Hence, the product is dispensed as is. For instance, if this self-oxidative dye composition is filled as a shampoo format, aerosol would dispense it with foaming whereas the bag on valve pump would dispense it as a liquid shampoo without getting aerated, until and unless the user works on this composition to generate lather.

In accordance with one of the embodiments, the airtight, single pack can be but not limited to a sachet or a tube.

EXAMPLES
Example 1
Aqueous Shampoo Format
Sr No Material Option 1 Option 2 Option 3
1. Sodium Laureth Sulphate 7.00 4 6
2. Cocamidopropylbetaine 2.00 0 0
3. Ethanolamine 4.00 4.00 4.00
4. Gallic Acid 1.10 1.50 2
5. p–Phenylenediamine 1.50 1.50 1.50
6. Resorcinol
0.70 0.70 0.70
7. m-Aminophenol 0.10 0.10 0.10
8. Hydroxyethyl cellulose 1.00 0.80 0.50
9. Acrylates,C10-30 Alkyl Acrylate Cross polymer 0 0 0.8
10. 2,4-Diaminophenoxyethanol HCl
0.50 0.50 0.50
11. N,N-Bis(2-Hydroxyethyl)-p-Phenylenediamine Sulphate
0.50 0.50 0.50
12. Ascorbic Acid
0.30 0.05 0.18
13. Polyquaternium-53 0.25 0.5 0
14. Acrylamidopropyltrimonium Chloride/Acrylamide Copolymer
0.03 0.08 0
15. Perfume/Parfum
0.10 0.10 0.10
16. DM Water 80.92 85.67 83.12

Example 2
Aqueous Cream Format
Sr No Material Option 1 Option 2 Option 3
1. Emulsifying Wax 4.00 4.50 7.00
2. Polyquaternium-37, PPG-1 Trideceth-6, Mineral Oil - - 0.50
3. Mineral Oil 3.00 3.00 1.00
4. Glyceryl Stearate & PEG-100 Stearate 3.00 3.00 -
5. Ascorbic Acid 0.30 0.30 0.30
6. p-pHenylenediamine Sulphate 3.50 - -
7. Toluene-2,5-Diaminesulphate - 1.50 -
8. p-Phenylenediamine - - 1.50
9. 2,4-Diaminophenoxyethanol 0.18 0.18 0.18
10. m-aminophenol 0.10 0.10 0.10
11. Resorcinol 0.60 0.60 0.60
12. Monoethanolamine 5.00 5.00 5.00
13. Gallic Acid 3.00 3.50 1.50
14. Perfume 0.15 0.15 0.15
15. DM Water 77.17 78.17 82.17

Example 3
Aqueous Gel Format
Sr No Material Option 1
Wt % Option 2
Wt %
1. Acrylates/C10-30 Alkyl Acrylates Crosspolymer 0.6 0.5
2. Sodium Laureth Sulphate 3.00 9.00
3. Ascorbic Acid 0.40 0.40
4. p-Phenylenediamine 1.50 1.50
5. 2,4-Diaminophenoxyethanol 0.15 0.15
6. m-aminophenol 0.10 0.10
7. Resorcinol 0.80 0.80
8. Monoethanolamine 3.00 4.00
9. Gallic Acid 2.00 1.75
10. PEG-12 Dimethicone - 0.25
11. Polyquaternium-7 - 0.5
12. Perfume 0.15 0.15
13. DM Water 88.30 80.90

Performance of Single Composition Self-Oxidative Shampoo Hair Colour on Human Hair Tress

Example 6
Performance of Single Composition Self-Oxidative Shampoo Hair Colour on Human Volunteers

, Claims:We Claim,
1. An aqueous single composition self-oxidative hair colouring composition comprising:
a. A self-oxidative molecule;
b. a pH adjusting agent, and
c. a combination of precursors and couplers used in oxidative hair colours,
wherein, the composition of the invention is applied directly to hair without prior mixing of the dye and self-oxidative molecule and does not require mixing with hydrogen peroxide.

2. The single composition self oxidative hair colouring composition as claimed in claim 1, wherein the self-oxidative molecule is selected from 3,4,5- Trihydroxybenzoic Acid, Gallic Acid, Tannic acid, pyrogallol, 1,2,4-trihydroxybenzene, 2,4–diaminophenol, 3,5-dihydroxybenzoic acid.

3. The self oxidative molecule is preferably gallic acid in the single-step hair composition as claimed in Claim1.

4. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the self-oxidative molecule is in range of 0.1 to 5 wt% , more preferably 0.5 to 3 wt% and most preferably 1 to 2.5 wt%.

5. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the pH adjusting agent is selected from, Ammonia/ Ammonium Hydroxide, Monoethanolamine, AMP, Urea, Sodium Hydroxide, Potassium Hydroxide, Sodium Silicate, Citric Acid, Tartaric Acid or like.

6. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the pH adjusting agent is preferably in range of 2.0 to 10.0wt %, more preferably in the range of 2.5 to 8.0 wt % and most preferably in the range of 3.0 to 7.0 wt %.

7. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the pH of the composition is preferably 6.0-11.0, more preferably 8.5 to 10.8, and most preferably 9.0-10.5.

8. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the combination of precursors and couplers used in oxidative hair colours selected from but not limited to p-phenylenediamine and its salts, Toluene-2,5-Diamine and its sulphate salt, N,N-Bis(2-hydroxyethyl)-p-phenylene diamine and its sulphate salt, 2,4-Diaminophenoxyethanol HCl, p-aminophenol and sulphates thereof, m-Aminophenol and sulphates thereof, 4-Amino-2-Hydroxytoluene, 1-naphthol, 3-Methyl-4-Aminophenol, 2-Amino-3-Hydroxypyridine, Phenyl Methyl Pyrazolone, Resorcinol, 2-Methyl-5-Hydroxyethylaminophenol, 4-Methylaminophenol sulphate.

9. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the combination of precursors and couplers is preferably in the range of 1.0-15.0%, more preferably in the range of 2.0 to 10.0 % and most preferably in the range of 3.0% to 9.0%.

10. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the composition further comprises an antioxidant or mixture of an antioxidants and a reducing agent.

11. The single compsotion self-oxidative hair colouring composition as claimed in claim 10, wherein the antioxidant and reducing agent is selected from Ascorbic Acid, Sodium Ascorbate, Sodium Erythobate, Sodium Sulphite, Sodium Metabisulphte, Sodium Thiosulphate, Butylatedhydroxy Toluene, and Tert- ButylHyroquinone.

12. The single composition self-oxidative hair colouring composition as claimed in claim 10, wherein the antioxidant and reducing agent is added preferably in the range of 0 to 1.5%, more preferably in the range of 0.05 to 1% and most preferably in the range of 0.1 to 0.8%.

13. The single composition self-oxidative step hair colouring composition as claimed in claim 1, wherein the composition may further comprise:
a. An emulsifier or surfactant or combination emulsifiers or surfactants, to form a stable cream or shampoo or foam;
b. A thickener or rheology modifier or a combination of thickeners or rheology modifiers, to obtain specific consistency, stability and spreadability of the composition on hair for effective application of dyeing composition in hair;
c. A cationic conditioner or combination of cationic conditioners, to impart better hair conditioning that lasts post-dyeing;
d. A Silicone conditioning agent or combination of silicone conditioning agents, to leave the hair soft and smooth after dyeing;
e. A humectant or combination of humectants, to moisturise hair, during or after dyeing;
f. An emollient or a combination of emollients to keep the hair soft and also provide smoothness to the product; and
g. Aqua / Water

14. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the emulsifier or surfactant is selected from but not limited to sodium lauryl ether sulphate, Sodium Lauryl Sulphate, Sodium lauryl sarcosinate, sodium lauroyl isotheonate, Cocamidopropyl betaine, cocamide MEA, Cocamide DEA, Sodium Cumene Sulphonate, Ammonium Laureth Sulphate, Lauramidopropyl betaine, Lauramide MEA, Oleth-5-phosphate and any typical non-ionic surfactant such as alkyl polyglucosides, ethoxylates.

15. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the emulsifier or surfactant is preferably in the range of 0 to 30 wt %; more preferably in the range of 10 to 25 wt % and most preferably in the range of 5 to 20 wt %.

16. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the thickener or rheology modifier is selected from but not limited to, C10-30 alky acrylate copolymer, Acrylates Copolymer, Emulsifying Wax, Cetyl Alcohol, Stearyl Alcohol, Stearic Acid, Cetearyl Alcohol, Ceteareth -20, Steareth-2, Steareth-21, Xanthan Gum, Hydroxyethyl cellulose, Hydroxyproylmethyl cellulose, Guar Gum.

17. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the thickener or rheology modifier preferably in the range of 0.1 to 15 wt %, more preferably in the range of 0.5 to 10 wt % and most preferably in the range of 0.5 to 7 wt % depending on the format.

18. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the cationic conditioner is selected from but not limited to, cationic quaternary conditioners, such as, Guar Hydroxypropyl trimonium Chloride, Polyquaternium-37, Polyquaternium-22, Polyquaternium-53, Behentrimonium Methosulphate, Behentrimonium Chloride, Cetyl Trimethyl Ammonium Chloride, Polyquaternium-10, Polyquaternium-7, Polyquaternium-39, and Acrylamidopropyltrimonium Chloride/Acrylamide Copolymer.

19. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the cationic conditioner is preferably in range of 0.1 to10.0 wt % more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %.

20. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein Silicone conditioning agent is selected from but not limited to, Dimethicone, PEG-12 Dimethicone, Amodimethicone, and Dimethiconol.

21. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein the silicone conditioning agent is preferably in range of 0.1 to 10.0 wt %, more preferably in the range of 0.5 to 8.0 wt %, and most preferably in the range of 0.5 to 5.0 wt %.

22. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein humectant is selected from but not limited to, Glycerine, Propylene Glycol, Propane Glycol, Panthenol, and Urea.

23. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein humectant is in range of preferably 0.1 to 20.0 wt %, more preferably 0.5 to 10.0 wt % and most preferably 1.0 to 5.0 wt %.

24. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein emollient is selected from but not limited to Mineral Oil, Isopropyl Myristate, Coconut Oil, and Paraffin Wax, Petroleum Jelly.

25. The single composition self-oxidative hair colouring composition as claimed in claim 13, wherein emollient is preferably in range of 0.1 to 40.0 wt % more preferably in the range of 0.5 to 25.0 wt %, and most preferably in the range of 1.0 to 1.5 wt %.

26. The self-oxidative composition as claimed in claim 13, wherein aqua /water content is preferably from 10.0 to 90.0 wt % of the composition, more preferably 30.0 to 70.0 wt % and most preferably 50 to 60.0 wt %.

27. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein, the composition is formulated as a viscous liquid.

28. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein, the composition is formulated as an aqueous gel

29. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein, the composition is formulated as a shampoo.

30. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein, the composition is formulated as a cream.

31. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein, the composition is formulated as a foam.

32. The single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the composition is packed in an air-tight or non-air sucking multi-use pack.

33. The single composition self-oxidative hair colouring composition as claimed in claim 32, wherein the multi use pack is an airtight bottle.

34. The single composition self-oxidative hair colouring composition as claimed in claim 32, wherein the multi use pack is a diaphragm pump.

35. The single composition self-oxidative hair colouring composition as claimed in claim 32, wherein the multi use pack is an aerosol pump.

36. The single composition self-oxidative hair colouring composition as claimed in claim 32, wherein the multi use pack is a “bag-on-valve” pump.

37. The single composition self-oxidative hair colouring composition as claimed in claim 32 is devoid of antioxidants.

38. The single composition self-oxidative hair colouring composition as claimed in Claim 1 is left on hair for a duration of 2 to 60 minutes, more preferably 5 to 30 minutes and most preferbaley for 10 to 20 minutes.

39. A process for application of the single composition self-oxidative hair colouring composition as claimed in claim 1, wherein the process comprises:
a) Take the product on the hand/ bowl as conevenient
b) Apply the product evenly on the hair
c) Allow the product stand on the hair for the required duration to get achieve the desired shade and intensity of colour
d) Wash the product with water till the water runs clear