Description:FIELD OF THE INVENTION
The present invention relates to a hair oil composition and a process for preparing the same. Specifically, the present invention relates to a clear and transparent hair oil composition having water-soluble hair conditioning actives and the same is solubilized without impacting clarity and transparency of the hair oil composition.

BACKGROUND OF THE INVENTION
Traditionally, hair oils are used for scalp and strand nourishment and hair health. Some of the prior art related to hair oils are discussed hereinbelow.

US20020039564A1 discloses a hair oil comprising a blend of (i) from 10% to 95%, by weight based on total weight, of a first oily component which is one or more glyceride fatty esters, and (ii) from 5% to 90%, by weight based on total weight, of a second oily component which is one or more hydrocarbon oils of average carbon chain length less than 20 carbon atoms.

WO2013092293A2 discloses a hair oil composition that provides the right balance of nourishment, manageability and feel to the hair as desired by the consumer. The present inventors have found that using a combination of mineral oil, vegetable oil and cetyl dimethicone, in a selected concentration range is able to provide all of the desired benefits and additionally superior sensorials.

US11642303B2 discloses compositions for treating and conditioning keratinous substrates, comprising a cationic agent comprising quaternary ammonium compounds; a modified starch; silane compounds, a cationic vinylpyrrolidone polymer and water. Also disclosed are methods treating and conditioning keratinous substrates using the composition.

US11337906B2 discloses hair care and conditioning compositions; and to methods for conditioning, managing, and/or styling the hair using the compositions. The hair conditioning and managing compositions are substantially anhydrous and include propylene glycol; one or more monoalcohols having from 2 to 6 carbon atoms; one or more cationic surfactants; and one or more fatty compounds. The compositions are solubilized, non-emulsified compositions until applied to wet or damp hair, whereupon the compositions form a lamellar phase in situ.

WO2016097387A1 discloses a composition in the form of an oil-in-water type nanoemulsion comprising (i) one or more polyethoxylated nonionic surfactants of the fatty alcohol ether type, (ii) one or more fatty substances having a melting temperature less than 35°C, chosen from vegetable oils, mineral oils and/or mixtures thereof, and (iii) one or more silicones. The invention also relates to a preparation process for the composition by phase inversion process (PIT).

US8114389B2 discloses oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block. Processes comprising such oil-in-water nanoemulsions.

WO2004103326A1 discloses oil-in-water (O/W) and water-in-oil (W/O) emulsions and microemulsions containing elastomeric silanes or siloxanes preferably having quaternary ammonium groups are generally made by reacting organic quaternary ammonium compounds having epoxide groups or halohydrin groups, with silanes or siloxanes having amino groups. The reaction is carried out in an aqueous polar phase containing a crosslinking agent and surfactant. The emulsions and microemulsions are especially useful for treating hair, skin, or the underarm.

As disclosed in the prior art documents, hair oil is generally composed of vegetable oils, specifically, blend of vegetable oil and mineral oil and with hydrophobic hair conditioning actives like silicones, esters, like Isopropyl myristate, cetyl dimethicone etc. These hydrophobic actives deposit on hair strands due to their lipophilicity and deliver smoothness to hair.

However, other hair care products such as shampoo and conditioners are designed with hydrophilic actives such as cationic actives which deposit on hair due to their positive charge and are able to give softer hair. These cationic actives play an important role in conditioning and smoothening of the hairs, however, these are hydrophilic and are soluble only in water. Accordingly, these cationic actives are used in shampoo and conditioners. Further, the application of shampoo and conditioners is time consuming and thus there is a requirement for ready to use products which also contain these water-soluble cationic actives. Hair oils are such a ready to use product, however, solubility of these cationic actives in oil is difficult as explained by their dielectric constant values. Dielectric constant of vegetable oils is in the range of 2 to 3.5, while the same for cationic actives like quaternary ammonium salts is in the range of 10-100.

Since these actives are water soluble, these actives can be formulated with oil as an opaque emulsion, which alters sensorial experience for consumer. Hence, it is important to solubilize these water-soluble cationic actives into hair oil without impacting clarity of the system and design single phase system.

OBJECTIVES OF THE PRESENT INVENTION
The primary objective of the present invention is to solubilize water-soluble cationic actives into hair oil without impacting clarity of the system and design single phase hair oil system.

It is further objective of the present invention is to provide a clear transparent hair oil composition containing water-soluble hair conditioning actives. It is further objective of the present invention is to provide a process for preparing the clear transparent hair oil composition.

It is further objective of the present invention is to provide a clear transparent hair oil composition having smoothening and conditioning effect and also the hair oil composition imparts elasticity and strength to the hairs of a user.

SUMMARY OF THE INVENTION
The present invention discloses a clear transparent hair oil composition having water-soluble hair conditioning actives and process for preparing same. The composition comprises oil base in a range of 0.01 v % to 99.0 v %, at least one cationic active agent in a range of 0.10-0.25 % v/v, at least one non-ionic surfactant in a range of 0.05% to 1% v/v, and silicone emulsion in a range of 0.000001 to 0.1%.

The oil base is selected from a vegetable oil base, a mineral oil base, and a combination thereof. The vegetable oil base is of vegetable origin and is selected from oils extracted from seeds, oils extracted from other parts of edible plants, coconut oil, rice bran oil, sunflower oil, superoline oil, mustard oil, sesame oil, canola oil, palm oil, soyabean oil, safflower oil, and a combination thereof.

The mineral oil base is selected from a petrolatum origin oil, a mineral oil of chain length C9-C25, and a combination thereof, wherein, the petrolatum origin oil is selected from alkane and Isoalkane of chain length C9-C15.

The cationic active agent is Quaternium ammonium salts and is selected from cetrimonium chloride, behetrimonium chloride, stearamidopropyl trimonium chloride, and a combination thereof.

The non-ionic surfactant is polyglyceryl non-ionic surfactant and is selected from polyglyceryl esters (PGEs), polyol esters, polyglycerol esters and a combination thereof.

The silicone emulsion is an emulsion of silicone in water, wherein a particle size of the emulsion ranges from 10nm to 1000nm. The silicone is selected from Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3, Dimethiconol, TEA-Dodecylbenzenesulphonate, Dimethicone, Aminoethylaminopropyl, PEG-6 Dimethicone, Trideceth-10, PEG-100 stearate, Steareth-6, Trideceth-3, and a combination thereof.

The present invention discloses a process for preparing the transparent hair oil composition. The process includes steps of 1) preparation of water phase, 2) preparation of oil phase, 3) emulsification, and 4) blending.

BRIEF DESCRIPTION OF THE DRAWING
The detailed description below will be better understood when read in conjunction with the appended drawings. For the purpose of assisting in the explanation of the invention, there are shown in the drawings embodiments which are presently preferred and considered illustrative.
It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown therein.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1(a): illustrates a hair oil composition having vegetable oil, mineral oil, cationic active, and silicone emulsion, wherein the hair oil is a hazy solution;
Figure 1(b): illustrates a hair oil composition having vegetable oil, mineral oil, cationic active, non-ionic surfactant, wherein the hair oil is a clear solution;
Figure 2: illustrates Boxplot of combing force for Untreated, Base oil and Porto;
Figure 3: illustrates 2-Sample t Test for the mean of hair smoothness for untreated and treated hair swatches;
Figure 4: illustrates 2-Sample t Test for the mean of hair smoothness for proto and base oil treated hair swatches;
Figure 5: illustrates 2-Sample t Test for the mean of hair smoothness for untreated and base oil treated hair swatches;
Figure 6: illustrates Boxplot of peak load for Untreated, Base oil and Porto;
Figure 7: illustrates 2-Sample t Test for the mean of hair softness for untreated and base oil treated hair swatches;
Figure 8: illustrates 2-Sample t Test for the mean of hair softness for untreated and proto oil treated hair swatches; and
Figure 9: illustrates 2-Sample t Test for the mean of hair softness for untreated and base oil treated hair swatches.

DESCRIPTION OF THE INVENTION
Hair oil contains blend of vegetable oil and mineral oil, however, combining these oils with water soluble cationic active gives hazy unstable solution. Accordingly, it is important to solubilize water soluble cationic actives in these oils and to keep it in stable single-phase hair oil without impacting clarity and transparency of the hair oil.

It is important to design an optimum ratio of surfactants, cationic actives, silicone emulsion and esters in the hair oil to deliver clear transparent system, wherein the hair oil gives superior conditioning benefit than traditional hair oil.

According to the main embodiment, the present invention discloses a clear and transparent hair oil composition, wherein the cationic actives, and silicone emulsion are solubilized in the blend of vegetable oil and mineral oil with the help of combination of hydrophilic and lipophilic surfactants. The stability of the solution is evaluated at 5◦C and 40◦C to evaluate impact of the temperature on the formulation.

Specifically, the present invention discloses a clear transparent hair oil composition having water-soluble hair conditioning actives and process for preparing same. The composition comprises oil base in a range of 0.01 v % to 99.0 v %, at least one cationic active agent in a range of 0.10-0.25 % v/v, at least one non-ionic surfactant in a range of 0.05% to 1% v/v, and silicone emulsion in a range of 0.000001 to 0.1%.

The oil base is selected from a vegetable oil base, a mineral oil base, and a combination thereof. The vegetable oil base is of vegetable origin and is selected from oils extracted from seeds, oils extracted from other parts of edible plants, coconut oil, rice bran oil, sunflower oil, superoline oil, mustard oil, sesame oil, canola oil, palm oil, soyabean oil, safflower oil, and a combination thereof.

The mineral oil base is selected from a petrolatum origin oil, a mineral oil of chain length C9-C25, and a combination thereof, wherein, the petrolatum origin oil is selected from alkane and Isoalkane of chain length C9-C15.

The cationic active agent is Quaternium ammonium salts and is selected from cetrimonium chloride, behetrimonium chloride, stearamidopropyl trimonium chloride, and a combination thereof. The non-ionic surfactant is polyglyceryl non-ionic surfactant and is selected from polyglyceryl esters (PGEs), polyol esters, polyglycerol esters and a combination thereof.

The silicone emulsion is an emulsion of silicone in water, wherein a particle size of the emulsion ranges from 10nm to 1000nm. The silicone is selected from Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3, Dimethiconol, TEA-Dodecylbenzenesulphonate, Dimethicone, Aminoethylaminopropyl, PEG-6 Dimethicone, Trideceth-10, PEG-100 stearate, Steareth-6, Trideceth-3, and a combination thereof.

The present invention discloses a process for preparing the transparent hair oil composition, the process comprises steps of 1) preparation of water phase, 2) preparation of oil phase, 3) emulsification, and 4) blending. Further, various ingredients as used in preparing the transparent hair oil compositions are mentioned hereinbelow.

Vegetable oil: Vegetable oil is selected from vegetable oil origin such as but not limited to vegetable oils, vegetable fats, oils extracted from seeds or from other parts of edible plants, coconut oil, rice bran oil, sunflower oil, superoline oil, mustard oil, sesame oil, canola oil, palm oil, soyabean oil, safflower oil, and a combination thereof. The vegetable oil is present in the hair care composition in the range of 0.01 v % to 99.0 v %.

Mineral Oil: Mineral oil is selected from petrolatum origin oils, mineral oil of chain length C9-C25, and a combination thereof. The petrolatum origin oils are selected from alkane, isoalkane of chain length C9-C15, and a combination thereof. The mineral oil is present in the hair care composition in the range of 0.01 v % to 99.0 v %.

Silicone Emulsion: The silicone emulsion is prepared by mixing silicone in water. Specifically, microemulsion or nanoemulsion of Amodimethicone, dimethiconol, dimethicone which contain non-ionic surfactant pair are prepared. The particle size of this emulsion ranges from 10nm to 1000nm and the emulsion is added from 0.000001 to 0.1%. the silicone is selected from Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3, Dimethiconol, TEA-Dodecylbenzenesulphonate, Dimethicone, Aminoethylaminopropyl, PEG-6 Dimethicone, Trideceth-10, PEG-100 stearate, Steareth-6, Trideceth-3, and a combination thereof.

Cationic Active and/or Conditioner: Cationic active and/or conditioner are selected from quaternium ammonium salts, like cetrimonium chloride, behetrimonium chloride, stearamidopropyl trimonium chloride, and a combination thereof, and the cationic active and/or conditioner are present in the hair care composition in the range of 0.01 to 1%.

Nonionic Surfactants: The Nonionic surfactants are "Polyglyceryl nonionic surfactant". It is an amphiphilic molecule comprising one or more nonionic hydrophilic segments comprised of a polyglyceryl moiety and one or more hydrophobic moieties. Examples of polyglyceryl nonionic surfactants include, but are not limited to, polyglyceryl esters (PGEs), such as polyglyceryl-10 laurate where PG = polyglyceryl moiety comprising ten (10) glyceryl repeat units, and R = C11H23, polyglyceryl -10 oleate.

Examples of polyglyceryl nonionic surfactants include but are not limited to polyol esters which are low HLB surfactants. In particular, polyglyceryl nonionic surfactants include but are not limited to polyglycerol esters such as, for example, polyglycerol polyricinoleate, polyglycerol poly-12-hydroxystearate or polyglycerol dimerate isostearate. These surfactants are used in hair care composition in the range of 0.05% to 1% v/v.

Further, the present invention discloses a process for preparing the transparent hair oil composition. The process in detail is explained hereinbelow.

Example 1
Step 1 - Preparation of water phase:
In a clean dry pre-blend vessel charge distilled water and add cationic active 1 and mix it properly.

Step 2 - Preparation of oil phase:
In a separate vessel mix Surfactant 1, Surfactant 2, Vegetable oil 1, and Cationic active-2, and heat the mixture to completely dissolve the Cationic active-2, again heat and mix until a clear solution is obtained. The heating temperature is 50-100 ͦ C and the mixing time is 10 to 30 minutes.

Step 3 - Emulsification:
Add water phase (prepared in step 1) to the oil phase (prepared in step 2) and mix until to get a clear mixture using 1000rpm REMI stirrer. Then add silicon microemulsion mix to get a clear mixture. The heating temperature is 50-100 ͦ C and the mixing time is 10 to 30 minutes.

Step 4 - Final blending:
In a separate vessel prepare base oil by adding the rest of the oil ingredients. In this base oil add emulsion prepared in step 3. Mix properly under slow mixing at 200 rpm, wherein the mixing time is 10 minutes.

Example 2
Step 1 - Preparation of water phase:
In a clean dry pre-blend vessel, charge water and add cationic active 1 and mix it properly, and add Surfactant 1, Surfactant 2.

Step 2 - Preparation of oil phase:
In a separate vessel, mix Vegetable oil 1 and Cationic active-2 and heat the mixture to dissolve the Cationic active-2 completely. Then again heat the mixture and mix until a clear solution is obtained. The heating temperature is 50-100 ͦ C and the mixing time is 10 to 30 minutes.

Step 3 - Emulsification:
In a separate vessel prepare base oil by adding the rest of the oil ingredients. In this base oil add water phase prepared in step 1 and oil phase as prepared in step 2. Mix properly under slow mixing at 200 rpm and the mixing time is 10 minutes.

Table 1 below discloses various ingredients and their % composition range as present in the transparent hair oil composition as disclosed herein.

Table 1
Item No. Ingredient Volume % Composition range Example
1 Surfactant 1 0-1 polyglycerol polyricinoleate selected from polyglycerol 3-polyricinoleate, Polyglyceryl-3 diisostearate; Sorbitan Oleate and Polyglyceryl-3 Polyricinoleate selected from Sorbitan Trioleate,
Lecithin, Sorbitan monosterate, Triglyceryl monooleate, PEG-7 Glyceryl Monococoate, Polysorbate 80
2 Surfactant 2 0-1 Polyglyceryl-10 Oleate, Polyglycerin-4-oleate
polyglyceryl-10 decaoleate, Polyglycerol fatty acid ester (PGFE), polysorbate 85, PEG-7 olivate,
Ceteary glucoside, PEG-8 Oleate, Ployglyceryl,
Oleth-10, Ceteth-10, PEG-8 laurate, Polysorbate 60 NF, Polysorbate 60, Polysorbate 80, Ceteareth- 20, Oleth-20, Steareth-20, Steareth-21, Isoceteth-20, Polysorbate 20, Laureth-23, PEG-100 stearate, Steareth-100
3 Vegetable Oil 1 0-97 Refined Coconut Oil, Pure coconut Oil, Refined Rice Bran Oil, Refined sunflower oil, Superoline oil, mustard oil, sesame oil, canola oil, palm oil, soyabean oil, safflower oil, and a combination thereof
4 Oil 2 Qs Mineral Oil – LLP, HLP, Alkanes – C13-18
5 Silicon emulsion range 0.01-0.0001 Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3 (commercially available as Belssil ADM 22 Wacker Chemie)
6 Cationic Active 1 0.1-0.2 Cetrimonium Chloride
7 Cationic Active 2 0.01-0.001 Behentrimonium Chloride, Propylene Glycol
8 Fragrance 0.1-1 perfume
9 Anti-oxidant 0.001-0.03 Di-t-butylhydroquinone, Butylated Hydroxytoluene, Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate

Experiments:
Two different hair oil compositions were prepared i.e. Composition 1 and Composition 2.
Composition 1: Vegetable oil + mineral oil + Cationic active + silicone emulsion = Hazy solution as depicted in figure 1(a).
Composition 2: Vegetable oil + mineral oil + Cationic active + non-ionic surfactant = Clear solution as depicted in figure 1(b).

Results: The above selected formulations were evaluated for hair smoothness and reduction percentage in plateau force is presented in table 2 below.

Table 2
Sr. No. Product % Reduction in Plateau force
1 Vegetable oil + Mineral oil 47%
2 Vegetable oil + Mineral oil + Cationic surfactant (0.15001 volume%) + Silicone emulsion 72%
3 Vegetable oil + Vegetable oil + Mineral oil+ Cationic surfactant (0.2001 volume%) + Silicone emulsion 72.5%

Below table 3 discloses various hair oil compositions as disclosed in the present invention along with their transparency at room temperature. It is important to note that the hair oil composition with specific volume percentage of cationic active 1, cationic active 2, water, vegetable oil, Amodimethicone emulsion, Low HLB surfactant (Polyglycerol Polyricinoleate), and High HLB surfactant (Polyglycerol-10 Oleate).
Table 3
% cationic active 1
% Cationic active 2 %Water
Silicone emulsion Vegetable Oil
Coconut oil % Amodimethicone emulsion Low HLB surfactant
(Polyglycerol Polyricinoleate) High HLB surfactant
(Polyglycerol-10 Oleate) Comment

0.1%
_
0.23%
0.1
20 _
0.3
0.4
Hazzy @ RT

0.2
_
0.47
0.1
20 _
0.3
0.4
Hazzy @RT

0.2
_
0.47
_
20 _
0.3
0.4
Clear @RT

0.3
_
0.7
_
20 _
0.3
0.4
Hazzy @RT

0.2
0.01
0.56
_
20 _
0.3
0.3
Hazzy @RT

0.2
0.02
0.65
_
20 _
0.3
0.4
Hazzy @RT

0.2
0.05
0.92
_
20 _
0.3
0.4
Hazzy @RT

0.2
0.001
0.479
_
20 _
0.3
0.4
Clear @RT

0.2
0.001
0.479
_
20 0.01
0.3
0.4
Hazzy @RT

0.1
_
0.23
_
20 0.01
0.3
0.4
Hazzy @RT

0.1
0.001
0.239
_
20 0.001
0.3
0.4
Clear @RT

0.15
0.001
0.239
_
20 0.001
0.3
0.4
Clear @RT

0.2
0.001
0.479
_
20 0.001
0.3
0.4
Clear @RT,4oC,40oC

In the above table 3, cationic active 1 is Cetrimonium Chloride; cationic active 2 is Behetrimonium Chloride; and silicone microemulsion is made up of silicone and water, wherein silicone is selected from Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3, and a combination thereof.

Below table 4 discloses various hair oil compositions as disclosed in the present invention along with their transparency, particle presence and stability test. Wherein, the main ingredients of the hair oil are cationic active 1, cationic active 2, vegetable oil (RRBO), Amodimethicone emulsion, High HLB surfactant and Low HLB surfactant (Sorbitan Oleate).

From table 4, it is important to note that all the 0.5 to 0.7 sorbitan oleate samples failed the stability test, hence, low HLB surfactant like Sorbitan Oleate cannot be used in this hair oil formulation.

Table 4
% cationic active 1
% Cationic active 2 Vegetable oil,
RRBO % Amodimethicone emulsion High HLB surfactant Low HLB surfactant
(Sorbitan Oleate)
Comment

0.2 0.001 30 0.001 0 0.05 Particle observed
0.2 0.001 30 0.001 0 0.1 Particle observed
0.2 0.001 30 0.001 0 0.2 Particle observed
0.2 0.001 30 0.001 0 0.3 Particle observed
0.2 0.001 30 0.001 0 0.4 Particle observed
0.2 0.001 30 0.001 0 0.5 Clear no particle, closer to base
0.2 0.001 30 0.001 0 0.6 Clear no particle, closer to base
0.2 0.001 30 0.001 00 0.7 Clear no particle, closer to base
0.2 0.001 30 0.001 0 0.8 Hazy
0.2 0.001 30 0.001 0 0.9 Hazy
0.2 0.001 30 0.001 0 1 Hazy

In the above table 4, cationic active 1 is Cetrimonium Chloride; cationic active 2 is Behetrimonium Chloride; and silicone microemulsion is made up of silicone and water, wherein silicone is selected from Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3, and a combination thereof.

Below table 5 discloses various hair oil compositions as disclosed in the present invention along with their transparency. Wherein the main ingredients of the hair oil are selected from cationic active 1, cationic active 2, base oil (RRBO), Amodimethicone emulsion, Low HLB surfactant (Polyglycerol Polyricinoleate).
Table 5
% cationic active 1
% Cationic active 2 Base oil,
RRBO % Amodimethicone emulsion Low HLB surfactant
(Polyglycerol Polyricinoleate)
Comment

0.2 0.001 30 0.001 0.1 Hazy
0.2 0.001 30 0.001 0.2 Hazy
0.2 0.001 30 0.001 0.3 Hazy
0.2 0.001 30 0.001 0.4 Hazy
0.2 0.001 30 0.001 0.5 Hazy
0.2 0.001 30 0.001 0.6 Hezzy
0.2 0.001 30 0.001 0.7 Hazy
0.2 0.001 30 0.001 0.8 Clear
0.2 0.001 30 0.001 0.9 Hazy
0.2 0.001 30 0.001 1 Hazy
0.2 0.001 20 0.001 0.8 Clear
0.2 0.005 30 0.001 0.85 clear
0.2 0.01 20 0.001 0.9 Clear
0.3 0.001 30 0.001 0.8 Clear
0.2 0.005 30 0.01 0.85 Clear
0.2 0.001 20 0.01 0.8 Clear
0.2 0.001 30 0.01 0.8 Clear
0.15 0.001 10 0.01 0.7 Clear

The transparent hair oil composition imparts smoothness, elasticity and strength to the hairs of a user. The hair smoothness data is presented in table 6 and figure 2 provides a graph of Boxplot of combing force for Untreated, Base oil and Porto. Hair smoothness study/experiment is explained hereinbelow.

1. Hair sample preparation:
Hair swatches of length about 20 cm were weighed and it is divided into following groups.
a) Untreated hair (UT)
b) Base Oil Treated hair (BT)*
c) Proto Oil treated hair (PT)**
All hair swatches were cleaned thoroughly with 15% of SLES solution (10% of wt. of Hair swatch) to remove particulate impurities and dried with hair dryer (cool and dry). Finally, these hair swatches were processed for further treatment with base oil and proto, wherein base oil refers to oil prepared without actives and proto refers to the oil as disclosed in the present invention.

2. Hair Smoothness measurement:
i. Six hair swatches of 5g each of length about 20 cm were weighed and divided into groups as mentioned above.
ii. For Base Oil treated hair, hair oil applied on hair swatches (10% of weight of hair swatch) uniformly across the length, the swatches were then washed with 15% SLES solution and dried in cold air. A total ten cycles of washing and drying were performed.
iii. For Proto Oil treated hair, hair oil applied on hair swatches (10% of weight of hair swatch) uniformly across the length. The swatches were then washed with 15% SLES solution and dried in cold air. A total ten cycles of washing and drying were performed.
iv. For Untreated set, the swatches were washed with 15% SLES solution and dried in cold air. Total ten cycles of washing and drying were performed.
v. Both the hair swatches set were kept overnight for acclimatization at RH 65±5% & Temperature 25±2.5 °C to maintain the constant condition for analysis.
vi. Tangles were removed by combing.
vii. Plateau load combing force (gf) value was measured using Diastron instrument and UV win software.
viii. Five readings were recorded for each swatch.

3. Data Analysis:
Software used for statistical analysis: Minitab 20 software.
Test Method: 2 sample t Test performed (figure 3-5) for the means of values of treated and untreated sets at the 0.05 level of significance. Wherein, figure 3 illustrates 2-Sample t Test for the mean of hair smoothness for untreated and treated hair swatches. The test showed that the mean of untreated hair is significantly different from the mean of the proto. Also, figure 4 illustrates 2-Sample t Test for the mean of hair smoothness for proto and base oil treated hair swatches. The test showed that the mean of proto treated hair is significantly different from the mean of the base oil treated hair. Also, figure 5 illustrates 2-Sample t Test for the mean of hair smoothness for untreated and base oil treated hair swatches. The test showed that the mean of untreated hair is significantly different from the mean of the base oil treated hair.

Table 6
Sr. No. Untreated Base oil proto
1 40.1 20.5 14.2
2 34.6 21.6 16.1
3 32.1 19.8 15.8
4 39.5 25.7 17
5 34.7 20.6 15.9
6 40.5 22.7 13
7 41.9 27.6 16.2
8 38.4 28.3 15.3
9 37.5 20.1 14.3
10 35.7 19.8 15.4
11 42.38 25.9 16.8
12 40.1 24.6 11.8
13 34.5 21.8 12.3
14 40 22.3 13
15 40.37 19.8 11.9
16 42.1 18.6 14
17 40.2 20.4 13.7
18 41 21.6 17.4
19 40.3 25.7 18.8
20 35.2 24.3 19.2
21 39.1 23.9 11.6
22 40.7 24.7 12.9
23 38.2 25.1 11.5
24 43.2 19.8 13.9
25 40.1 25.7 12.7
26 41.2 21.8 13.1
27 40.5 18.9 10.27
28 35.29 22.8 15.8
29 39.04 21.6 14.5
30 31.2 29.4 15.3
Mean 38.66 22.85 14.46

Further, the hair softness data is presented in below table 7 and figure 6 provides a graph of Boxplot of peak load for Untreated, Base oil and Porto. Hair softness study/experiment is explained hereinbelow.

1. Hair Sample Preparation:
Hair swatches of length about 20 cm were weighed and it is divided into following groups.
a) Untreated hair (UT)
b) Base Oil Treated hair (BT)*
c) Proto Oil treated hair (PT)**
All hair swatches were cleaned thoroughly with 15% of SLES solution (10% of wt. of Hair swatch) to remove particulate impurities and dried with hair dryer (cool & dry). Finally, these hair swatches were processed for further treatment with base oil and proto, wherein base oil refers to oil prepared without actives and proto refers to the oil as disclosed in the present invention.

2. Hair Softness measurement:
i. Six hair swatches of 5g each of length about 20 cm were weighed and divided into groups as mentioned above.
ii. For Base Oil Treated hair, Hair oil applied on hair swatches (10% of weight of hair swatch) uniformly across the length. The swatches were then washed with 15% SLES solution & dried in cold air. A total ten cycles of washing and drying were performed.
iii. For Proto Oil treated hair, Hair oil applied on hair swatches (10% of weight of hair swatch) uniformly across the length. The swatches were then washed with 15% SLES solution & dried in cold air. A total ten cycles of washing and drying were performed.
iv. For Untreated set, the swatches were washed with 15% SLES solution & dried in cold air. A total ten cycles of washing and drying were performed.
v. Both the hair swatches set were kept overnight for acclimatization at RH 65±5% & Temperature 25±2.5 °C to maintain the constant condition for analysis.
vi. Tangles were removed by combing.
vii. Suppleness or flexibility was measured by measuring the Peak load (gf) value which was measured using Universal Tensile Machine (by Shimadzu) instrument and Trapezium-X software.
viii. Five readings were recorded for each swatch.

3. Data Analysis:
Software used for statistical analysis: Minitab 20 software.
Test Method: 2 sample t Test performed (figure 7-9) for the means of values of treated and untreated sets at the 0.01 level of significance. Wherein, figure 7 illustrates 2-Sample t Test for the mean of hair softness for untreated and base oil treated hair swatches. The test showed that the mean of untreated hair is significantly different from the mean of the base oil treated hair. Also, figure 8 illustrates 2-Sample t Test for the mean of hair softness for untreated and proto oil treated hair swatches. The test showed that the mean of untreated hair is significantly different from the mean of the proto-oil treated hair. Also Figure 9: 2-Sample t Test for the mean of hair softness for untreated and base oil treated hair swatches. The test showed that the mean of base oil treated hair is significantly different from the mean of the proto-oil treated hair.

Table 7
Sr. No. Untreated BASE OIL PROTO
1 43.92 30.5 21.8
2 48.55 35.32 22.23
3 44.76 25.9 21.3
4 49.19 29.71 20.83
5 48.31 30.45 22.78
6 47.28 31.6 23.14
7 39.89 27.9 20.1
8 40.32 33.2 22.3
9 47.28 32.76 21.6
10 39.89 27.4 24.92
11 40.32 28.1 18.2
12 44.28 26.9 19.4
13 45.76 30.2 22.51
14 43.97 32.1 21.87
15 43.92 30.76 21.91
16 48.55 29.3 23.43
17 41.35 28.34 22.05
18 40.28 32.54 22.15
19 49.47 28.65 24.64
20 48.47 29.98 22.67
21 41.75 35.2 18.58
22 45.39 25.34 20.79
23 49.86 20.12 24.17
24 44.38 23.45 19.2
25 46.32 34.6 17.82
26 45.78 26.7 21.2
27 48.26 25.8 22.3
28 49.87 27.9 22.11
29 41.47 28.45 24.5
30 48.19 30.27 23.87
Mean 45.23433 29.31467 21.81233333
, Claims:1. A transparent hair oil composition, wherein the composition comprises:
oil base in a range of 0.01 to 99.0 v/v %;
at least one cationic active agent in a range of 0.10 to 0.25 v/v %;
at least one non-ionic surfactant in a range of 0.05% to 1v/v%; and
silicone emulsion in a range of 0.000001 to 0.1 v/v%.

2. The transparent hair oil composition as claimed in claim 1, wherein, the oil base is selected from a vegetable oil base, a mineral oil base, and a combination thereof.

3. The transparent hair oil composition as claimed in claim 2, wherein, the vegetable oil base is vegetable origin and is selected from oils extracted from seeds, oils extracted from other parts of edible plants, coconut oil, rice bran oil, sunflower oil, superoline oil, mustard oil, sesame oil, canola oil, palm oil, soyabean oil, safflower oil and a combination thereof.

4. The transparent hair oil composition as claimed in claim 2, wherein, the mineral oil base is selected from a petrolatum origin oil, a mineral oil of chain length C9-C25, and a combination thereof, wherein, the petrolatum origin oil is selected from alkane and Isoalkane of chain length C9-C15.

5. The transparent hair oil composition as claimed in claim 1, wherein, the cationic active agent is Quaternium ammonium salts and is selected from cetrimonium chloride, behetrimonium chloride, stearamidopropyl trimonium chloride and a combination thereof.
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6. The transparent hair oil composition as claimed in claim 1, wherein, the non-ionic surfactant is polyglyceryl non-ionic surfactant and is selected from, polyglyceryl esters (PGEs), polyol esters, polyglycerol esters and a combination thereof.

7. The transparent hair oil composition as claimed in claim 1, wherein, the silicone emulsion is an emulsion of silicone in water, wherein a particle size of the emulsion ranges from 10nm to 1000nm.

8. The transparent hair oil composition as claimed in claim 7, wherein, the silicone is selected from Amodimethicone, Laureth-7, Trideceth-6, Trideceth-3, Dimethiconol, TEA-Dodecylbenzenesulphonate, Dimethicone, Aminoethylaminopropyl, PEG-6 Dimethicone, Trideceth-10, PEG-100 stearate, Steareth-6, Trideceth-3, and a combination thereof.

9. The transparent hair oil composition as claimed in claim 1, wherein, the hair oil imparts smoothness, elasticity and strength to the hairs of a user.

10. A process for preparing the transparent hair oil composition, wherein the process comprises:
preparing a water phase by mixing distilled water and Cationic active 1;
preparing an oil phase by mixing Surfactant 1, Surfactant 2, Vegetable oil 1, and Cationic active 2 to get an oil phase mixture, heating and mixing the oil phase mixture to get a clear solution of the oil phase; and
emulsification by mixing the water phase and the oil phase to get a clear mixture and adding a silicon microemulsion to get an emulsion mixture, blending an oil base and the emulsion mixture to get the transparent hair oil composition.

11. A process for preparing the transparent hair oil composition, wherein the process comprises:
preparing a water phase by mixing distilled water and Cationic active 1, and adding Surfactant 1 and Surfactant 2;
preparing an oil phase by mixing Vegetable oil 1, and Cationic active 2 to get an oil phase mixture, heating and mixing the oil phase mixture to get a clear solution of the oil phase; and
emulsification by mixing an oil base, the water phase and the oil phase, wherein the mixing is slow mixing at 200 rpm at a mixing time of 10 minutes.

12. The process as claimed in claims 10 and 11, wherein, heating and mixing the oil phase mixture to get the clear solution of the oil phase is conducted at a heating temperature in a range of 50-100 ͦ C and at a mixing time of 10 to 30 minutes.

13. The process as claimed in claims 10 and 11, wherein, the Vegetable oil 1 is selected from coconut oil, rice bran oil, sunflower oil, superoline oil, mustard oil, sesame oil, canola oil, palm oil, soyabean oil, safflower oil and a combination thereof; the Cationic active 1 and the Cationic active 2 are selected from cetrimonium chloride, behetrimonium chloride, stearamidopropyl trimonium chloride and a combination thereof; the Surfactant 1. and the Surfactant 2 are selected from polyglyceryl esters (PGEs), polyol esters, polyglycerol esters and a combination thereof.

14. The process as claimed in claims 10 and 11, wherein, the base oil is selected from a vegetable oil base, a mineral oil base, and a combination thereof.