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Hair Removal Cream

Abstract: The present invention relates novel synergistic depilatory compositions. The composition comprises (a) thioglycolic acid, in range of 0.5%-15.0%; (b) guanidine carbonate, in range of 1.0%-20.0%; (c) magnesium trisilicate, in range of 0.01%-5.0%; (d) urea, in range of 0.2%-20.0%; (e) ethyl alcohol, in range of 0.001%-10.0%; (f) turpentine oil, in range of 0.01%-10.0%; (g) tea tree oil, in range of 0.01%-10.0%; and (h) menthol, in range of 0.01%-10.0%. The present invention is synergistic depilatory compositions and adjunct ingredients formulated in form of a cream and process for preparation of same.

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Patent Information

Application #
Filing Date
27 January 2018
Publication Number
31/2019
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
vishal@inttladvocare.com
Parent Application

Applicants

DABUR INDIA LIMITED
8/3, Asaf Ali Road, New Delhi- 110 002

Inventors

1. ACHAR SUDHIR
DRDC, No. 22, Site-IV, Sahibabad-201010, Dist- Ghaziabad, U.P. India
2. LUTHRA S.K.
DRDC, No. 22, Site-IV, Sahibabad-201010, Dist- Ghaziabad, U.P. India
3. SHARMA MANMOHAN
DRDC, No. 22, Site-IV, Sahibabad-201010, Dist- Ghaziabad, U.P. India
4. KUMAR DEEPAK
DRDC, No. 22, Site-IV, Sahibabad-201010, Dist- Ghaziabad, U.P. India

Specification

FIELD OF THE INVENTION
The present invention relates to depilatory compositions. More particularly, the present invention relates to a hair removal cream.
BACKGROUND OF THE INVENTION
Currently, the removal of hair from the human body has received considerable attention due to reasons of hygiene and aesthetic appeal. The hair and hair follicles can be removed by surgical methods, lasers or by electrolysis and by chemical depilatories. Although traditionally hair has been removed by the use of tweezers, razors or other instruments; however, compared to surgical procedures such methods do not produce long lasting effects. Moreover, the use of hair removal instruments is generally confined to removal of hair from along the eyebrows, nostrils or arm pits. Creams or cold waxes have been formulated for the purpose of achieving more lasting hair removal over greater skin areas than is possible by plucking out individual hairs from a localized part of the body.
Depilatory formulation is a cosmetic preparation used to remove hair from the skin on the human body. The most common active ingredient in chemical depilatories is an alkali or alkaline earth metal thioglycolate, or thioglycolic acid which weakens the hair by breaking the disulfide bonds in the keratin of hair. When enough chemical bonds are broken, the hair can be rubbed or scraped off where it emerges from its follicle. The thioglycolate salt is formed by reacting an alkali or alkaline earth metal hydroxide with thioglycolic acid. An excess of alkali or alkaline earth metal hydroxide allows the thioglycolic acid to react with the cystine in keratin. The chemical reaction is as follows:
2SH-CH2-COOH (thioglycolic acid) + R-S-S-R (cystine) ? 2R-SH + COOH-CH2-SS-CH2-COOH (dithiodiglycolic acid).
A depilatory composition comprising the aforestated active component may be formulated in the form of a powder. Such a composition, prior to its application, is mixed with suitable quantity of water to form a paste. Thereafter, the paste is applied to the skin using a spatula or a hair dyeing brush. After that, the paste is left on the skin for 5 to 10 minutes. Finally, the depilatory is removed with a spoon or spatula and rinsed thoroughly.
However, a depilatory formulation in the form of a powder has numerous drawbacks. The formulation being in the form of a powder is prone to produce a dust cloud, which can be quite irritating on inhalation or contacting the eyes or mucous membrane. A powdered depilatory formulation requires careful mixing with a predetermined quantity of water, leading to longer usage durations for the product. Further, the paste formed from the depilatory powder may not be of optimum consistency, thereby affecting its depilatory efficacy.
Several depilatory compositions have been developed in the art for hair removal purposes; however, fast acting, efficient and safe depilatory compositions are still being sought. Currently, consumers prefer ready to use and fast acting formulations. Commonly used active ingredients in depilatories include thioglycolic acid and its salts, which break down the disulfide bonds in keratin and weaken the hair so that it is easily scraped off where it emerges from the hair follicle. Depilatory compositions which allow for reduced or similar amounts of the active ingredients compared to prior art, along with increased efficacy and safety, and lower incidence of allergic reactions are highly desirable. An increase in the concentration of the active depilatory component in the depilatory composition may improve the performance of said composition. However, increasing the concentration of an active in a depilatory composition may result in several side effects, such as skin irritation, burns, and skin damage, and may not necessarily provide effective and safe depilatory action in a short period of time.
The efficacy of the active component in a formulation may be increased by combining with components that may or may not have a mode of action similar to that of the active component. This phenomenon is termed as synergism and the additional components are termed as synergists. Hence, there remains a need in the art for a depilatory composition comprising thioglycolic acid and its salts and synergists to improve the depilatory efficacy. There is also a need for a depilatory formulation which can achieve effective depilatory action in a short period of time, without producing any side effects.
PCT publication WO2017122020 A1 discloses depilatory compositions comprising a depilatory active, alkali metal hydroxide and an aminoalkylpropanol, where alkali metal hydroxide preferably comprises potassium hydroxide and the aminoalkylpropanol preferably comprises aminomethylpropanol and composition is formulated in gel, mousse, foam, cream, lotion or peelable film.
US patent US4631064A discloses aqueous depilatory compositions containing biguanide and active thiol agent(s) which provide for faster hair removal due to the acceleration by biguanide, allowing the thiol active to more readily exert its depilatory effect.
US patent US6306380B1 discloses oil-in-water emulsion depilatory compositions comprising continuous aqueous phase, depilatory agent substantially free from tertiary amines degrading hair keratin.
US patent publication US20090004128A1 discloses non-irritant rapid-action depilatory composition, comprising at least one bisulphic and/or sulphite compound and an organic reducing agent in a cosmetically acceptable medium formulated in gel, foam, emulsion or cream.
In order to overcome the drawbacks of the prior art, the inventors of the present invention have formulated a depilatory composition in the form of a cream.
OBJECTS OF THE INVENTION
The main object of the present invention is to provide a synergistic depilatory composition which is fast acting, efficient and having a high depilation rate.
It is an object of the present invention to provide a depilatory composition useful for the removal of body hair.
It is a further object of the invention to provide fast acting, efficient and safe depilatory composition for effective removal of unwanted body hair.
It is another object of the present invention to provide effective depilatory action in a short period of time, without producing any side effects.
Another object of the present invention is to provide a synergistic depilatory composition which effectively masks the unpleasant odour of thioglycolic acid.
Another object of the invention is to provide a method for utilizing the said depilatory composition.
SUMMARY OF THE INVENTION
According to the present invention there is provided a synergistic depilatory composition comprising: (a) thioglycolic acid; (b) guanidine carbonate; (c) magnesium trisilicate; (d) urea; (e) alcohol; (f) natural oils; and (h) menthol and its synthetic analogues as active ingredients present in an amount effective.
In an another embodiment of the present invention, the composition comprises (a) thioglycolic acid, in range of 0.5%-15.0%; (b) guanidine carbonate, in range of 1.0%-20.0%; (c) magnesium trisilicate, in range of 0.01%-5.0%; (d) urea, in range of 0.2%-20.0%; (e) ethyl alcohol, in range of 0.001%-10.0%; (f) turpentine oil, in range of 0.01%-10.0%; (g) tea tree oil, in range of 0.01%-10.0%; and (h) menthol, in range of 0.01%-10.0%.
In an another embodiment of the present invention, the composition further comprises one or more adjunct ingredients for formulating topical composition.
In an another embodiment of the present invention, one or more adjunct ingredients are selected from the group consisting of water, hydroxide base, opacifiers, humectants, absorbants or anti-caking agents, chelating agents, oils or lipids, emulsifiers, moisturizers, binders or bulking agent, thickening agents, solvents, fragrances and Synergistic natural oils
In an another embodiment of the present invention, the water is DM water present in range of 30.0%-90.0%.
In an another embodiment of the present invention, one or more hydroxide base selected from calcium hydroxide, potassium hydroxide and sodium hydroxide, preferably calcium hydroxide and sodium hydroxide, wherein calcium hydroxide is present in range of 1.0%-20.0% and sodium hydroxide is present in range of 0.1%-5.0%.
In an another embodiment of the present invention, opacifier as titanium dioxide present in range of 0.001%-1.0%.
In an another embodiment of the present invention, one or more humectants selected form propylene glycol and glycerine; wherein propylene glycol is present in range of 0.001%-2.0% and Glycerine is present in range 0.1%-10.0%.
In an another embodiment of the present invention, the chelating agent sodium gluconate, wherein Sodium gluconate is present in range of 0.001%-1.0%.
In an another embodiment of the present invention, one or more oils or lipids selected from LLP and Jojoba oil, wherein LLP is present in range of 0.1%-10.0% and jajoba oil is present is range of 0.0015-1.05.
In an another embodiment of the present invention, one or more emulsifier selected from Ceteareth 20 and Cetostearyl alcohol, wherein Ceteareth 20 is present in range of 0.1%-10.0% and Cetostearyl alcohol is present in range of 0.5%-15.0%.
In an another embodiment of the present invention, the binder or bulking agent as sodium magnesium silicate present in range of 0.001%-10.0%.
In an another embodiment of the present invention, the composition is formulated in form of cream.
In an another embodiment of the present invention, the composition depilates up to 99% in two minutes.
DETAILED DESCRIPTION OF THE INVENTION
Discussed below are some representative embodiments of the current invention. The invention in its broader aspects is not limited to the specific details and representative methods. The illustrative examples are described in this section in connection with the embodiments and methods provided. The invention according to its various aspects is particularly pointed out and distinctly claimed in the attached claims read in view of this specification, and appropriate equivalents.
It is to be noted that, as used in the specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a composition containing “a compound” includes a mixture of two or more compounds. It should also be noted that the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.
The expression of quantity in terms of "% w/w" or “%” means the percentage by weight, relative to the weight of the total solution or composition, unless otherwise specified.
The present invention describes novel synergistic depilatory composition and process for preparation of same.
The present invention provides synergistic depilatory composition comprising, a) one or two depilating agents; b) absorbant/anti-caking agent; c) solvent; d) moisturizer; e) anti-inflammatory agent; f) antibacterial agent; g) cooling agent. The efficacy of thioglycolic acid, in terms of the percentage rate of depilation at 2 minutes, has been synergistically enhanced, without any of the associated side effects. Further, the depilatory composition of the present invention effectively masks the unpleasant odour of thioglycolic acid.
The “depilating agents” used are reducing agent (i.e. hair digesting or decomposing agents) which comprises guanidine carbonate, thioglycolic acid in the range of about 1.0 % to 20.0%.
The “absorbant/anti-caking agent” comprises talc and magnesium trisilicate wherein the talc is present in the range of about 0.01% to 10.0% and the magnesium trisilicate is present in the range of about 0.01% to 5.0%.
The “Moisturizer” includes urea in the range of about 0.2 to 20.0%.
The “solvent” comprises alcohol e.g. ethyl alcohol and isopropyl alcohol, but preferably isopropyl alcohol in the range of about 0.001 to 10.0%.
The “synergistic natural oil” comprises of natural oils e.g. Turpentine oil, tea tree oil, rosemary oil, lavender oil, pine oil etc. but preferably turpentine oil in the range of about 0.01 to 10.0% and tea tree oil in the range of about 0.01 to 10.0%.
The “synergistic cooling agent” comprises of menthol and its synthetic analogues but preferably menthol in the range of about 0.01 to 10.0 %.
The present invention provides synergistic depilatory composition composition comprising (a) thioglycolic acid is present in range of 0.5%-15.0%; (b) guanidine carbonate is present in range of 1.0%-20.0%; (c) magnesium trisilicate is present in range of 0.01%-5.0%; (d) urea is present in range of 0.2%-20.0%; (e) ethyl alcohol present in range of 0.001%-10.0%; (f) turpentine oil is present in range of 0.01%-10.0%; (g) tea tree oil is present in range of 0.01%-10.0% and (h) menthol is present in range of 0.01%-10.0%.
The hair removing composition of the present invention differs markedly from prior art chemical depilatory in that it is composed of inexpensive, readily available, safe, non-irritating materials and can be utilized at room temperature.
The present invention also comprises a variety of conventional additives and adjunct ingredients commonly used in the art of formulating topically applied compositions. These ingredients may include, but are not limited to, aqua, base, opacifier, humectant, chelating agent, oil/lipid, emulsifier, binder/bulking agent, thickening agent, fragrance etc.
The “opacifier” includes titanium dioxide in the range of about 0.001 to 1.0%.
The “Humectant” includes propylene glycol, glycerine wherein the propylene glycol is present in the range of about 0.001 to 2.0% and the glycerine is present in the range of about 0.1 to 10.0.
The “chelating agent” includes sodium gluconate wherein it is present in the range of about 0.001-1.0%.
The “Oil/lipid” includes LLP and jojoba oil wherein LLP is present in the range of about 0.1-10.0% and the jojoba oil present in the range of about 0.001-1.0%.
The “Emulsifier” includes Ceteareth 20, Cetostearyl alcohol, wherein Ceteareth 20 is present in the range of about 0.1 to 10.0.
The “binder/bulking agent” includes sodium magnesium silicate wherein it is present in the range of about 0.001-10.0%.
The “Thickening agent” includes Aculyn-33 is present in the range of about 0.001-10.0%.
The “Fragrance” includes perfumes in a range of about 0.01-1.0%
The hair removing compositions of the present invention are non-toxic and non-irritating to even the most sensitive skin area. Moreover they have no offensive odor and can easily be washed off with soap and water, nor does their use create an offensive odor.
The present invention provides a depilatory composition in the form of a cream, wherein the efficacy of thioglycolic acid, in terms of the percentage rate of depilation at 2 minutes, has been synergistically enhanced, without any of the associated side effects. Further, the depilatory composition of the present invention effectively masks the unpleasant odour of thioglycolic acid.
Table 1 below illustrates the various concentration ranges of the components of the composition used.

Components Concentration Range
S. No. Ingredients Role % Range
1 DM Water Aqua 30.0-90.0
2 Calcium hydroxide Base 1.0-20.0
3 Guanidine carbonate Reducing agent 1.0-20.0
4 Sodium hydroxide Base 0.1-5.0
5 Thioglycolic acid Reducing Agent 0.5-15.0
6 Titanium dioxide Opacifier 0.001-1.0
7 Propylene glycol Humectant 0.001-2.0
8 Glycerine Humectant 0.1-10.0
9 Talc Absorbant/Anti-caking 0.01-10.0
10 Magnesium trisilicate Absorbant/Anti-caking 0.01-5.0
11 Sodium gluconate Chelating Agent 0.001-1.0
12 LLP Oil/Lipid 0.1-10.0
13 Ceteareth 20 Emulsifier 0.1-10.0
14 Cetostearyl alcohol Emulsifier 0.5-15.0
15 Jojoba oil Oil/Lipid 0.001-1.0
16 Urea Moisturizer 0.2-20.0
17 Sodium magnesium silicate Binder/bulking agent 0.001-10.0
18 Aculyn-33 Thickening agent 0.001-10.0
19 Ethyl alcohol Solvent 0.001-10.0
20 Perfume Fragrance 0.01-1.0
21 Turpentine oil Synergistic Natural Oil 0.01-10.0
22 Tea tree oil Synergistic Natural Oil 0.01-10.0
23 Menthol Synergistic Cooling Agent 0.01-10.0

The present invention is more particularly described in the following non-limiting examples that are intended as illustrations only since numerous modifications and variations within the scope of the present invention will be apparent to a skilled artisan. Unless otherwise noted, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples were obtained or made available from the chemical suppliers.
EXAMPLES
Example 1: Depilatory Formulations
Five different depilatory formulations were produced using the ingredients set forth in table 1 above, each ingredient being present in the compositions in the percentage by weight specified in Table 3 below.
Table 2: Hair removal cream formulations
S. No. Ingredients I II III IV V
1 DM Water 68.85 62.33 69.9 68.52 69.21
2 Calcium hydroxide - 5 - 3 2
3 Magnesium hydroxide 6 - - - 3
4 Guanidine carbonate - 5 - - -
5 Sodium hydroxide - 1.66 6 3.66 1.66
6 Thioglycolic acid 80% 5.75 5.75 5.75 5.75 5.75
7 Titanium dioxide 0.1 0.06 0.05 0.07 0.08
8 Propylene glycol 0.75 0.25 0.5 0.3 0.5
9 Glycerine - 0.5 - 0.25 0.25
10 PEG 400 - - 0.25 0.5 -
11 Talc 1 1 1 1 1
12 Magnesium trisilicate 0.5 0.5 0.5 0.5 0.5
13 Sodium gluconate - 0.1 0.1 - 0.1
14 disod. EDTA 0.1 - - 0.1 -
15 LLP - 3.5 2 3 4
16 Cetyl alcohol 2.5 - - 2.5 -
17 Stearyl alcohol 2.5 - - 2.5 -
18 Ceteareth 20 - 2.5 3 2 2
19 Cetostearyl alcohol 5.5 5.5 4.5 - 3.5
20 Jojoba oil 0.05 0.05 0.05 0.05 0.05
21 Urea 4 4 4 4 4
22 Sodium magnesium silicate 0.4 0.4 0.4 0.4 0.4
23 Aculyn-33 - 0.1 - 0.1 -
24 Carbopol 934 - - 0.2 - 0.1
25 HEC 250 HHR 0.2 - - - 0.1
26 Ethyl alcohol 1 1 1 1 1
27 Perfume 0.5 0.5 0.5 0.5 0.5
28 Turpentine oil 0.1 0.1 0.1 0.1 0.1
29 Tea tree oil 0.1 0.1 0.1 0.1 0.1
30 Menthol 0.1 0.1 0.1 0.1 0.1

It will thus be seen that there is provided compositions which achieve the various objects of the invention and where are well adapted to meet the conditions of practical use.
The present invention also provides a method for preparing a depilatory formulation in the form of a cream which comprises the following steps: (a) Add and mix water, alkali, guanidine carbonate, humectants, absorbants, chelating agents, opacifiers in a mixing vessel 1 and heat; (b) Heat mixture of lipids, and emulsifiers; (c) Add mixture of step b to mixing vessel 1, cool and further add thioglycolic acid; (d) Adding moisturizers, binders, and thickening agents to a mixing vessel 2 and mixing; (e) Add the mixture of step d to mixing vessel 1 and mix; and (f) Add solvent, perfume and other synergistic agents to the mixture of step and mix to obtain the depilatory formulation of the present invention in the form of a cream.
The process of the present invention is illustrated by the following examples, which are, however, not to be construed to limit the scope of the present invention. All the samples of the bioactive composition on analysis were found to conform to the characteristics described above.
All percentages and ratios used herein are by weight unless otherwise specified.
Example: Method of Preparation
Procedure: Weigh specified amount of Water. Add calcium hydroxide, guanidine carbonate, propylene glycol, glycerine, talc, magnesium trisilicate, sodium gluconate, Titanium dioxide and heat it to 75?C. Weigh the oil phase; LLP, Ceteareth-20, cetostearyl alcohol, jojoba oil and heat to 75?C. Add oil phase to water phase while mixing. Cool the mixture below 20?C. Add thioglycolic acid slowly. To another vessel, dissolve urea in water, add sodium magnesium silicate and acculyn-33, and add the mixture to main vessel and homogenise. To above mixture add menthol (dissolved in alcohol), perfume, turpentine oil and tea tree oil and mix to form a uniform product.
The depilatory cream formulation of the present invention affords up to 99% depilation in 2 minutes. The synergistic effect was experimentally demonstrated by measuring the rate of depilation with and without the aforestated synergistic composition.
Table 3: Synergistic Experimentation with different combination of components
Ingredients I II III IV V VI VII VIII IX X XI
Description GC + TGA + MTS + U + EA + TO + TTO + M TGA + MTS + U + EA + TO + TTO + M GC + TGA + MTS + U + TO + TTO + M GC + TGA + U + EA + TO + TTO + M GC + TGA + MTS + EA + TO + TTO + M GC + TGA + MTS + U + EA TGA + MTS + U + TO + TTO + M TGA + MTS + TO + TTO + M TGA + TO + TTO + M TGA GC + TGA + MTS + U + EA + TTO + M
1 DM Water 61.8 66.8 62.8 62.3 65.8 62.1 67.8 71.8 72.3 72.6 61.9
2 Calcium hydroxide 5 5 5 5 5 5 5 5 5 5 5
3 Guanidine carbonate (GC) 5 - 5 5 5 5 - - - - 5
4 Sodium hydroxide 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66 1.66
5 Thioglycolic acid (TGA) 80% 5.75 5.75 5.75 5.75 5.75 5.75 5.75 5.75 5.75 5.75 5.75
6 Titanium dioxide 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06
7 Propylene glycol 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
8 Glycerine 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
9 Talc 1 1 1 1 1 1 1 1 1 1 1
10 Magnesium trisilicate (MTS) 0.5 0.5 0.5 - 0.5 0.5 0.5 0.5 - - 0.5
11 Sodium gluconate 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
12 LLP 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5
13 Ceteareth 20 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
14 Cetostearyl alcohol 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5
15 Jojoba oil 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
16 Urea (U) 4 4 4 4 - 4 4 - - - 4
17 Sodium magnesium silicate 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
18 Aculyn-33 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
19 Ethyl alcohol (EA) 1 1 - 1 1 1 - - - - 1
20 Perfume 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
21 Turpentine oil (TO) 0.1 0.1 0.1 0.1 0.1 - 0.1 0.1 0.1 - -
22 Tea tree oil (TTO) 0.1 0.1 0.1 0.1 0.1 - 0.1 0.1 0.1 - 0.1
23 Menthol (M) 0.1 0.1 0.1 0.1 0.1 - 0.1 0.1 0.1 - 0.1
Application Very Good Very Good Very Good Very Good Very Good Very Good Very Good Very Good Very Good Very Good Very Good
Adhesiveness Good Good Good Good Good Good Good Good Good Good Good
pH 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5 12.0-12.5
Max. time of application 2 min 2 min 2 min 2 min 2 min 2 min 2 min 2 min 2 min 2 min 2 min
Odour (0-5)* 5 5 5 5 5 1 5 5 5 1 2
Rate of depilation 99% 85% 90% 95% 95% 95% 85% 80% 70% 65% 95%

We claim:
1. A synergistic depilatory composition comprising: (a) thioglycolic acid; (b) guanidine carbonate; (c) magnesium trisilicate; (d) urea; (e) alcohol; (f) natural oils; and (h) menthol and its synthetic analogues as active ingredients present in an amount effective.
2. The synergistic depilatory composition as claimed in claim 1, the composition comprises (a) thioglycolic acid, in range of 0.5%-15.0%; (b) guanidine carbonate, in range of 1.0%-20.0%; (c) magnesium trisilicate, in range of 0.01%-5.0%; (d) urea, in range of 0.2%-20.0%; (e) ethyl alcohol, in range of 0.001%-10.0%; (f) turpentine oil, in range of 0.01%-10.0%; (g) tea tree oil, in range of 0.01%-10.0%; and (h) menthol, in range of 0.01%-10.0%.
3. The synergistic depilatory composition as claimed in claims 1 and 2, wherein the composition further comprises one or more adjunct ingredients for formulating topical composition.
4. The synergistic depilatory composition as claimed in claim 3, wherein one or more adjunct ingredients are selected from the group consisting of hydroxide base, opacifiers, humectants, absorbants or anti-caking agents, chelating agents, oils or lipids, emulsifiers, moisturizers, binders or bulking agent, thickening agents, solvents, fragrances and Synergistic natural oils
5. The synergistic depilatory composition as claimed in claim 4, wherein the water is DM water present in range of 30.0%-90.0%.
6. The synergistic depilatory composition as claimed in claim 4, wherein one or more hydroxide base selected from calcium hydroxide, potassium hydroxide and sodium hydroxide, preferably calcium hydroxide and sodium hydroxide, wherein calcium hydroxide is present in range of 1.0%-20.0% and sodium hydroxide is present in range of 0.1%-5.0%.
7. The synergistic depilatory composition as claimed in claim 4, wherein opacifier as titanium dioxide present in range of 0.001%-1.0%.
8. The synergistic depilatory composition as claimed in claim 4, wherein one or more humectants selected form propylene glycol and glycerine; wherein propylene glycol is present in range of 0.001%-2.0% and Glycerine is present in range 0.1%-10.0%.
9. The synergistic depilatory composition as claimed in claim 4, wherein the chelating agent sodium gluconate, wherein Sodium gluconate is present in range of 0.001%-1.0%.
10. The synergistic depilatory composition as claimed in claim 4, one or more oils or lipids selected from LLP and Jojoba oil, wherein LLP is present in range of 0.1%-10.0% and jajoba oil is present is range of 0.0015-1.05.
11. The synergistic depilatory composition as claimed in claim 4, wherein one or more emulsifier selected from Ceteareth 20 and Cetostearyl alcohol, wherein Ceteareth 20 is present in range of 0.1%-10.0% and Cetostearyl alcohol is present in range of 0.5%-15.0%.
12. The synergistic depilatory composition as claimed in claim 4, wherein the binder or bulking agent as sodium magnesium silicate present in range of 0.001%-10.0%.
13. The synergistic depilatory composition as claimed in claim 4, wherein the thickening agent as aculyn-33 present in range of 0.001%-10.0%.
14. The synergistic depilatory composition as claimed in claim 4, wherein the fragrance perfumes, wherein perfume is present in range of 0.01%-1.0%.
15. The synergistic depilatory composition as claimed in claims 1 to 4, wherein the composition is formulated in form of cream.
16. The synergistic depilatory composition as claimed in claims 1 to 4, wherein the composition depilates up to 99% in two minutes.

Documents

Application Documents

# Name Date
1 201711026824-COMPLETE SPECIFICATION [24-01-2019(online)].pdf 2019-01-24
1 201711026824-PROVISIONAL SPECIFICATION [27-07-2017(online)].pdf 2017-07-27
2 201711026824-POWER OF AUTHORITY [27-07-2017(online)].pdf 2017-07-27
2 201711026824-CORRESPONDENCE-OTHERS [24-01-2019(online)].pdf 2019-01-24
3 201711026824-FORM 1 [27-07-2017(online)].pdf 2017-07-27
3 201711026824-APPLICATIONFORPOSTDATING [25-07-2018(online)].pdf 2018-07-25
4 201711026824-DECLARATION OF INVENTORSHIP (FORM 5) [27-07-2017(online)].pdf 2017-07-27
4 201711026824-Correspondence-100817.pdf 2017-08-17
5 201711026824-OTHERS-100817.pdf 2017-08-17
5 201711026824-Proof of Right (MANDATORY) [05-08-2017(online)].pdf 2017-08-05
6 201711026824-Correspondence-310717.pdf 2017-08-11
6 201711026824-Power of Attorney-310717.pdf 2017-08-11
7 201711026824-Correspondence-310717.pdf 2017-08-11
7 201711026824-Power of Attorney-310717.pdf 2017-08-11
8 201711026824-OTHERS-100817.pdf 2017-08-17
8 201711026824-Proof of Right (MANDATORY) [05-08-2017(online)].pdf 2017-08-05
9 201711026824-Correspondence-100817.pdf 2017-08-17
9 201711026824-DECLARATION OF INVENTORSHIP (FORM 5) [27-07-2017(online)].pdf 2017-07-27
10 201711026824-FORM 1 [27-07-2017(online)].pdf 2017-07-27
10 201711026824-APPLICATIONFORPOSTDATING [25-07-2018(online)].pdf 2018-07-25
11 201711026824-POWER OF AUTHORITY [27-07-2017(online)].pdf 2017-07-27
11 201711026824-CORRESPONDENCE-OTHERS [24-01-2019(online)].pdf 2019-01-24
12 201711026824-PROVISIONAL SPECIFICATION [27-07-2017(online)].pdf 2017-07-27
12 201711026824-COMPLETE SPECIFICATION [24-01-2019(online)].pdf 2019-01-24