Description:TECHNICAL FIELD
The present disclosure relates to a hair repair composition.
BACKGROUND
Consumers desire strong and healthy hair. Environmental factors or intensive chemical or mechanical treatment such as combing, brushing, drying, heating, bleaching, dying, straightening/waving etc. for hair results in weakened or damaged hair. Further, care and styling routines varies with individual to individual which help them achieve their desired look. However, these actions performed by consumers introduce modifications to the chemistry of hair keratin protein which results structural changes to hair fiber at micro- and macro-structural level. The changes in physical properties of hair fiber are generally perceived as damage by the consumers. Once the hair is damaged, it is more susceptible to further damage and breakage. Damage causes hair bonds to break. This results in loss of combability, moisture retention, luster, shine and softness in hair.
Hair is largely made of keratin, and like any protein, it's composed of amino acids, which are joined together by three main types of bonds, namely hydrogen bonds, ionic (or salt) bonds and disulphide (or covalent) bonds. They all behave differently when hair is exposed to humidity, heat and stress.
The hydrogen bond or ionic (or salt) bonds break quite easily with moisture and then reform in dry condition.
Hair becomes more fragile when it's wet and many stylists recommend wrapping the hair in the towel and gently squeezing rather than rubbing it after washing. Amongst all bonds, hydrogen bonds are the weakest type of bond, they break down easily with humidity. Therefore, hair loses its style or goes frizzy when it's humid. They reform again when the hair is dry, which is how one can 'set' hair with heat in chosen style.
Ionic [or salt] bonds are stronger but they still break down when the hair is completely wet. Both hydrogen and ionic bonds break and reform all the time.
On the other hand, disulphide bonds, break permanently under stress from factors such as heat, coloring or tugging. They are the strongest, more brittles and don't naturally repair themselves. Breaking of these bonds lead to frazzled and dry look to hair which are hard to style.
Unlike conditioners that coat and hydrate strands, bond repair hair treatment works to heal and strengthen the shaft from within, working on one or more types of bonds, depending on the final product.
Various organic molecules and combinations thereof have been suggested for use in the treatment of damaged hair.
WO2023281310 describes compositions and methods for improving the physical properties of healthy and damaged hair, comprising selected (meth)acrylate monomers.
JP2021130632 describes oil based solid cosmetics containing an ester oil, the oil-based solid cosmetics containing (A) polyglycerol fatty acid ester and (B) at least one selected from a wax and a hydrogenated vegetable oil.
KR20210081672 discloses a cosmetic composition for recovering damaged hair, comprising keratin protein or peptide, coconut oil and citric acid.
The combinations or compositions reported in the prior art fail to provide desired repair, nourishment and strength to damaged hair.
Hence, there is a need for products that can nourish and strengthen hair in order to combat hair damage, repair damaged hair, and impart generally healthy properties to hair.
We have now surprisingly found that compositions comprising oil soluble derivatives of weak acids and oil provide an unexpected repair to the damaged hair.
OBJECTIVES
The main objective of the present disclosure is to provide a composition for hair repair.
Another objective of the present disclosure is to provide a composition that can nourish and strengthen hair to combat hair damage, repair damaged hair, and impart generally healthy properties to hair.
SUMMARY
The present disclosure provides a composition for hair repair comprising,
0.1wt% to 99.9 wt% oil soluble derivatives of weak acids, and
0.1wt% to 99.9 wt% of oil,
wherein, wt% of components is 100wt% based on total weight of the composition,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups are selected from acetic acid esters of mono and diglycerides of fatty acids, lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids, mixed acetic and tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is selected from light liquid paraffin, sunflower oil, coconut oil, soybean oil, peanut oil, safflower oil, rapeseed oil, cottonseed oil, corn oil, rice bran oil, sesame oil, palm oil, mustard oil, canola oil, high oleic oils and mixtures thereof.
These and other features, aspects, and advantages of the present subject matter will become better understood with reference to the following description. This summary is provided to introduce a selection of concepts in a simplified form. This summary is not intended to identify key features or essential features of the subject matter, nor is it intended to be used to limit the scope of the subject matter.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
The above and other features, aspects and advantages of the subject matter will be better understood with regard to the following description, and accompanying drawings where:
Figure 1 provides effect on tensile strength of the bleached damaged hair sample (H2) after damage recovery treatment (20 cycles) by the present composition.
Figure 2 provides effect on tensile strength of the bleached damaged hair sample (H2) after damage recovery treatment (1 cycle) by the present composition.
Figure 3 provides effect on tensile strength of the pollution damaged hair sample (H4) after damage recovery treatment (20 cycles) by the present composition.
Figure 4 provides effect on tensile strength of the surfactant damaged hair sample (H5) after damage recovery treatment (20 cycles) by the present composition.
Figure 5 provides effect on tensile strength of the pollution damaged hair sample (H6) after damage recovery treatment (20 cycles) by the present composition.
DETAILED DESCRIPTION
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary.
Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the scope of the invention as defined by the appended claims and their equivalents.
It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.
The composition disclosed in the prior art do not meet the desired requirements of the composition which helps to recover the damage to the hair. The composition of the present invention advantageously demonstrated the beneficial effects for the recovery of damaged hair along with desired nourishment, strengthening of hair to combat hair damage, to repair damaged hair, and to impart healthy properties to hair.
Therefore, in an aspect, the present disclosure provides a composition for hair repair comprising,
0.1wt% to 99.9wt% oil soluble derivatives of weak acids, and
0.1wt% to 99.9wt% of oil,
Wherein, wt% of components is 100wt% based on total weight of the composition,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups are selected from acetic acid esters of mono and diglycerides of fatty acids, lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids, mixed acetic and tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is selected from light liquid paraffin, sunflower oil, coconut oil, soybean oil, peanut oil, safflower oil, rapeseed oil, cottonseed oil, corn oil, rice bran oil, sesame oil, palm oil, mustard oil, canola oil, high oleic oils and mixtures thereof.
Oil soluble derivatives of weak acids having carboxylic acid functional groups are
1. Lactic acid esters of mono and diglycerides of fatty acids - defined as esters of glycerol with lactic acid and fatty acids occurring in food fats and oils. They may contain small amounts of free glycerol, free fatty acids, free lactic acid and free glycerides.

where, R1 to R3 is in the range of C4 to C28.
General structure formula for Lactic acid esters of mono- and diglycerides of fatty acids.
2. Citric acid esters of mono and diglycerides of fatty acids - defined as esters of glycerol with citric acid and fatty acids occurring in food fats and oils. They may contain small amounts of free glycerol, free fatty acids, free citric acid and free glycerides. It is an anionic molecule due to its free acid groups and will show normally two pK-points.

where, R1 to R3 is in the range of C4 to C28.
General structural formula for Citric acid esters of mono and diglycerides of fatty acids.
3. Tartaric acid esters of mono- and diglycerides of fatty acids - defined as esters of glycerol with tartaric acid and fatty acids occurring in food fats and oils. They may contain small amounts of free glycerol, free fatty acids, free tartaric acid and free glycerides.

where, R1 to R3 is in the range of C4 to C28.
General structural formula for Tartaric acid esters of mono- and diglycerides of fatty acids
4. Mono- and diacetyl tartaric acid esters of mono- and diglycerides of fatty acids - Defined as mixed esters of glycerol with mono- and diacetyl tartaric acids (obtained from tartaric acid) and fatty acids occurring in food fats and oils. They may contain small amounts of free glycerol, free fatty acids, free tartaric and acetic acids and their combinations, and free glycerides. They may contain also tartaric and acetic esters of fatty acids. They contain also acetic and tartaric acid esters of monoglycerides, where, as free glycerides, di- and triglycerides can occur.

where, R1 to R3 is in the range of C4 to C28.
General structural formula for Mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids.
In an embodiment, a composition for hair repair of the present invention optionally comprises excipients in the range of 0 to 99.8wt% of the total weight of the composition.
In an embodiment of the present disclosure, the composition further comprises excipients selected from colour, antioxidant, fragrance and herbal extract oil or combinations thereof. The formulation may contain antioxidant which is selected from the group consisting of tocopherol or vitamin E, propyl gallate, octyl gallate and oryzanol or combinations thereof.
In an embodiment of the present disclosure, a composition for hair repair comprising,
0.1wt% to 50wt% oil soluble derivatives of weak acids, and
50wt% to 99.9wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups are selected from lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is selected from light liquid paraffin, sunflower oil, coconut oil, soybean oil, peanut oil, safflower oil, rapeseed oil, cottonseed oil, corn oil, rice bran oil, sesame oil, palm oil, mustard oil, canola oil, high oleic oils and mixtures thereof.
In an embodiment of the present disclosure, a composition for hair repair comprising,
2wt% to 30wt% oil soluble derivatives of weak acids, and
70wt% to 98wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups are selected from lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is selected from light liquid paraffin, sunflower oil, coconut oil, soybean oil, peanut oil, safflower oil, rapeseed oil, cottonseed oil, corn oil, rice bran oil, sesame oil, palm oil, mustard oil, canola oil, high oleic oils and mixtures thereof.
In another embodiment of the present disclosure, a composition for hair repair comprising,
5wt% to 30wt% oil soluble derivatives of weak acids, and
70wt% to 95wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups are selected from lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is selected from light liquid paraffin, sunflower oil, coconut oil, soybean oil, peanut oil, safflower oil, rapeseed oil, cottonseed oil, corn oil, rice bran oil, sesame oil, palm oil, mustard oil, canola oil, high oleic oils and mixtures thereof.
In a preferred embodiment of the present disclosure, a composition for hair repair comprising,
5wt% oil soluble derivatives of weak acids, and
95wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is citric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In another preferred embodiment of the present disclosure, a composition for hair repair comprising,
5wt% oil soluble derivatives of weak acids, and
95wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In a preferred embodiment of the present disclosure, a composition for hair repair comprising,
1wt% oil soluble derivatives of weak acids, and
99wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is citric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In another preferred embodiment of the present disclosure, a composition for hair repair comprising,
1wt% oil soluble derivatives of weak acids, and
99wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In another preferred embodiment of the present disclosure, a composition for hair repair comprising,
20wt% oil soluble derivatives of weak acids, and
80wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is citric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In yet another preferred embodiment of the present disclosure, a composition for hair repair comprising,
20wt% oil soluble derivatives of weak acids, and
80wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In another preferred embodiment of the present disclosure, a composition for hair repair comprising,
30wt% oil soluble derivatives of weak acids, and
70wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is citric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In yet another preferred embodiment of the present disclosure, a composition for hair repair comprising,
30wt% oil soluble derivatives of weak acids, and
70wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In yet another preferred embodiment of the present disclosure, a composition for hair repair comprising,
50wt% oil soluble derivatives of weak acids, and
50wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In yet another preferred embodiment of the present disclosure, a composition for hair repair comprising,
50wt% oil soluble derivatives of weak acids, and
50wt% of oil,
wherein, oil soluble derivatives of weak acids having carboxylic acid functional groups is citric acid esters of mono and diglycerides of fatty acids,
wherein, oil is light liquid paraffin.
In an embodiment of the present disclosure, fatty acids are selected from the group comprising caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid and linoleic acid.
In another embodiment of the present disclosure, fatty acids are selected from caprylic acid, lauric acid, palmitic acid, stearic acid, oleic acid and linoleic acid.
In a preferred embodiment of the present disclosure, fatty acids are selected from lauric acid, palmitic acid and stearic acid.
The present invention is further illustrated by the following examples. These examples describe possible preferred embodiments for illustrative purposes only, but they do not limit the scope of the invention. These laboratory scale experiments can be scaled up to industrial/ commercial scale.
EXAMPLES
The following examples are given by way of illustration of the present invention and should not be construed to limit the scope of present disclosure. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are intended to provide further explanation of the subject matter.
Although the subject matter has been described in considerable detail with reference to certain preferred embodiments thereof, other embodiments are possible. As such, the spirit and scope of the subject matter should not be limited to the description of the preferred embodiment contained therein.
Materials and Methods
a) Compositions -
Compositions were prepared as per table 2, by method as follows.
Oil formulation:
a. The required quantity of fatty acid ester (as per table 2) was mixed with Light liquid paraffin oil under stirring at 300 to 500 rpm with overhead stirrer at room temperature. If the fatty acid requires melting, heating of fatty acid was carried out up to 50 °C.
b. After ensuring complete dissolution of oleic acid, oil formulation was then used to apply on the hair.
b) Human Hair Sourcing
Tresses of 20 cm long Asian (Indian) hairs used in the present disclosure were sourced from a local supplier. The hair samples supplied were obtained from users who have not undergone any chemical or thermal treatment(s) and were black in color typical of hairs from people with Asian (Indian) origin. The hair samples were divided into multiple swatches weighing 5 gram each and stored under controlled environmental conditions of 65% relative humidity (+/-2%) and temperature at 25? (+/-1 ?).
c) Hair Swatch Washing
The swatches were washed with 15% sodium lauryl ethoxy sulphate (SLES) under controlled conditions which can be described as below:
i. SLES Amount (15% SLES Solution): 10% of weight of hair tress
ii. Regulated rubbing of swatches during application: 5 strokes on each side of the swatch back and forth motion
iii. Rinsing of Swatch: rubbing swatch 10 times on each side in back-and-forth motion (1 min) under flowing tap water.
d) Hair Treatments
1. Bleach damage protocol
a) Mixture of 3.5 gram of commercial bleach and 4.5-gram commercial cream (30 vol|9%) applied on 5-gram hair swatch.
b) Hair was then wrapped in the foil paper for 60 minutes.
c) After hair swatch was washed with 15% solution of SLES as per the hair washing procedure mentioned above and then dried at ambient temperature.
2. Pollution damage protocol
a) A close chamber was prepared with a dimension (h x I x d) of 35 cm x 35 cm x 35 cm.
b) Three cigarettes (50 mm length) of the same brand were sequentially smoked inside the chamber.
b) The smoking time for each cigarette was uniform, which was approximately 8-10 minutes.
c) Hair swatch was exposed to the smoke inside the chamber.
d) The total exposer time of hair swatch inside the chamber was 1 hour for each cycle.
e) Hair swatch was then removed from the chamber and washing was performed as per washing procedure using SLES to remove residue, and finally hung up to be air-dried.
f) This procedure was repeated for five cycles in total.
g) The control samples were cleaned with the same washing method used at the pre-treatment stage and this was repeated for five cycles.
3. Surfactant damage protocol
Hair swatch was washed 30 times with SLES as per procedure mention in the section – Hair Swatch Washing. Increase in surface roughness of the hair swatch indicates the damage.
4. Heat damage protocol
a) The heat straightener (230 ?) was used to prepare heat damaged hair swatches.
b) After clamping hair swatch, the heated straightener was glided on the hair swatch firmly.
c) Same heat treatment repeated for 1 minute.
d) Finally, hair swatch washed with SLES solution and dried in the ambient atmosphere.
5. Hard water damage protocols
a) Hard water was prepared by dissolving 0.304 g of anhydrous calcium chloride and 0.139 g of magnesium chloride per litre of deionised water. The measured hardness was 342 mg/L calculated as calcium carbonate.
b) Hair swatch washed with hard water by rubbing swatch 10 times on each side in back-and-forth motion (1 min). Excess water from hair swatch was then dabbed with tissue paper. The hair swatch was then allowed for drying at ambient temperature for 8-10 hours.
c) Above cycle repeated for 30 times. Increase in surface roughness of the hair swatch indicates
the damage.
e) Product application protocol
Product treatment of hair swatches involves uniform pouring of hair oil with active (10% of weight of hair tress) using pipette in small amounts. Pouring of product is followed by gentle rubbing of the hair swatch 5 times on each side in back-and-forth motions to distribute the oil evenly. The treated swatches were incubated as for around 15 hours in a chamber with controlled humidity and temperature conditions (RH60% and Temperature- 25?). The overnight oiled swatches were washed with SLES as mentioned earlier. Three swatches per treatment were used for evaluation.
f) Hair Average Diameter Measurement
Diameter measurement of hair strands was estimated using Laser Scan Micrometer (Model LSM-6200). The instrument was programmed to collect 5 scans across the length of the fibre (30 mm) at uniform spacing. Average cross-sectional area was reported for each strand on analysis.
g) Single Hair Fibre Tensile Extension
Individual hair strands were selected from hair swatches and crimped to a length of 30 mm. The crimped strands were then subjected to Tensile testing using a Dia-Stron Mini Tensile Tester MTT175 wherein the strands were extended at a uniform extension rate of 20 mm/min until fibre fracture. The stress-strain curve obtained for 40 strands per swatch (120 strands per treatment) were analyzed using the software to obtain different tensile parameters – elastic Modulus, break stress, break extension and toughness. All the tests were done in a chamber with controlled environmental conditions (25°C ± 2?, 60% ± 2% RH). Table 1 demonstrates the tensile strength of the hair subjected to various treatment protocol.
Table 1: Tensile strength of hair sample subjected to various treatment protocol.
Hair Sample No. Hair Type Tensile Strength (mPa)
H1 Untreated 212.34
H2 Bleach Damaged 164.73
H3 Heat Damaged 178.56
H4 Pollution Damaged 187.52
H5 Surfactant Damaged 192.64
H6 Hard Water Damaged 189.38
Table 1 demonstrated effect of different factors such as bleach, heat, pollution, surfactant and hard water on the tensile strength (mPa) of hair fibre.
Table 2: Compositions for damage recovery treatment
Composition Citrem Datem LLP Tensile strength (mPa) of hair sample before composition treatment Tensile strength (mPa) after composition treatment
Damage Recovery Treatment after 20 Cycles on Bleached damaged Hair (H2)
C1 5% ----- 95% 164.73 188.55
C2 ----- 5% 95% 164.73 191.78
C3 ----- ----- 100% 164.73 165.21
C4 50% ----- 50% 164.73 197.26
C5 ----- 50% 50% 164.73 201.17
Damage Recovery Treatment after 1 Cycle on Bleached damaged Hair (H2)
C2 ----- 5% 95% 164.73 172.53
C8 ----- 1% 99% 164.73 168.78
C9 ----- 20% 80% 164.73 184.88
C10 ----- 30% 70% 164.73 188.29
C4 50% ----- 50% 164.73 190.18
C5 ----- 50% 50% 164.73 192.32
Damage Recovery Treatment after 20 Cycle on Pollution Damaged Hair (H4)
C2 ----- 5% 95% 187.52 192.56
C4 50% ----- 50% 187.52 199.15
C5 ----- 50% 50% 187.52 201.04
Damage Recovery Treatment after 20 Cycle on Surfactant Damaged Hair (H5)
C1 5% ----- 95% 192.64 198.94
C4 50% ----- 50% 192.64 202.22
C5 ----- 50% 50% 192.64 204.34
Damage Recovery Treatment after 20 Cycle Hard Water Damaged (H6)
C2 ----- 5% 95% 189.38 194.01
C4 50% ---- 50% 189.38 204.11
C5 ----- 50% 50% 189.38 206.53
Citrem - Citric acid esters of mono- and diglycerides of fatty acids (fatty acids derived from coconut)
Datem - Mono- and diacetyl tartaric acid esters of mono- and diglycerides of fatty acids (fatty acids derived from coconut)
Light liquid paraffin (LLP)
Table 2 demonstrated effects of composition of the present disclosure on the tensile strength of hair sample affected by different factors such as bleach, pollution, surfactant and hard water. As disclosed in table 2, the compositions demonstrated improvement in the tensile strength of the hair samples indicating recovery of damage caused by different factors such as bleach, pollution, surfactant and hard water.
TECHNICAL ADVANTAGES
The present disclosure described herein has several technical advantages as follows:
• The composition provides hair improvement in hair strength, shine, softness, smoothness, hair breakage, combability and moisture retention.
, Claims:WE CLAIM:
1. A composition comprising,
0.1wt% to 99.9wt% oil soluble derivatives of weak acids, and
0.1wt% to 99.9wt% of oil,
wherein, wt% of components is 100wt% based on total weight of the composition.
2. The composition as claimed in claim 1, wherein oil soluble derivatives of weak acids having carboxylic acid functional groups are selected from acetic acid esters of mono and diglycerides of fatty acids, lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids, mixed acetic and tartaric acid esters of mono and diglycerides of fatty acids.
3. The composition as claimed in claim 2, wherein oil soluble derivatives of weak acids are selected from lactic acid esters of mono and diglycerides of fatty acids, citric acid esters of mono and diglycerides of fatty acids, tartaric acid esters of mono and diglycerides of fatty acids, mono and diacetyl tartaric acid esters of mono and diglycerides of fatty acids.
4. The composition as claimed in claim 1, wherein oil is selected from light liquid paraffin, sunflower oil, coconut oil, soybean oil, peanut oil, safflower oil, rapeseed oil, cottonseed oil, corn oil, rice bran oil, sesame oil, palm oil, mustard oil, canola oil, high oleic oils and mixtures thereof.
5. The composition as claimed in claim 1, wherein oil is selected from light liquid paraffin or sunflower oil.
6. The composition as claimed in claim 2, wherein fatty acids are selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid and linoleic acid.
7. The composition as claimed in claim 1, optionally comprising excipients selected from colour, antioxidant, fragrance and herbal extract oil or combinations thereof.
8. The composition as claimed in claim 7, wherein excipients are the range of 0 to 99.8wt% of the total weight of the composition.
9. A method of preparation of composition as claimed in any of the preceding claim, comprising steps of:
a. subjecting optionally, the oil soluble derivatives of weak acids for melting at a temperature in the range of 40 °C to 55°C;
b. mixing the oil soluble derivatives of weak acids with oil under stirring at 300 to 500 rpm with overhead stirrer at room temperature to obtain a composition.