CLIAMS:1. A soap composition comprising:
a. 32-40 wt% of soap;
b. 0.25 – 3% of at least one performance enhancing agent; and
c. cosmetically acceptable additive(s).
2. The soap composition as claimed in claim 1, wherein said soap is chosen from a group comprising but are not limited to sodium-, potassium-, magnesium-, ammonium-, triethanolammonium-, alkanolammonium- and mixtures thereof, salt of fatty acids, preferably the sodium salt having 8 to 14 carbon atoms that comprise soluble soaps and 16 to 24 carbon atoms that comprise of insoluble soaps, soap derivatives like coconut oil, palm kernel oil, palm oil, and the like and mixtures thereof.
3. The soap composition as claimed in claim 1, wherein said performance enhancing agent are selected from a group comprising but are not limited to water soluble mono or di-carboxylic acids such as carboxylic acids with a carbon chain length of C1 – C3 or derivatives thereof, mono or di-carboxylic acids such as acetic acid, PEG/PPG derived carboxylic acid such as PEG-mono-acids, PEG-di-acids, PPG-di-acids, PPG-mono-acids and combination thereof.
4. The soap composition as claimed in claim 1, wherein rate of wear ranges from 15% to 20%.
5. The soap composition as claimed in claim 1, wherein amount of lather produced ranges from 400 mL to 500 mL. ,TagSPECI:Field of the invention:
The present invention relates to soap formulations. In particular the present invention relates to soap formulations with improved performance and characteristics. Specifically the present invention relates to transparent soap formulation with excellent lather and reduced rate of wear. The invention also relates to opaque soap formulations with improved rate of wear and lather.
Background of the invention:
Transparent soaps are preferred by the customers because of various reasons. Transparent soaps are known to contain significant amounts of solvents which help in solubilizing soap and also provide moisturization to skin. However, it has been seen that the transparent soap has higher rate of wear when compared to opaque soaps and often provide unsatisfactory amounts of lather. Since transparent soaps are costlier than opaque soaps it is important to provide consumers with soaps that have a lower rate of wear and yet provide good lather properties.

Several attempts have been made to provide a transparent soap with the desired properties.
WO2003010273 relates to transparent soap compositions comprising the salt of 12- hydroxystearic acid or a precursor thereof. The invention also relates to an improved cast route process for making transparent soap that is energy saving, economical and rapid. The process uses less or no alcohol during processing and requires lower maturation times than the conventional cast route for making transparent soap. The said transparent soap bar composition further comprises 30 to 60% of total fatty matter wherein 1 to 15% is the salt of 12-hydroxystearic acid or a precursor thereof, 20 to 50% of at least one polyhydric alcohol (from about 30 to 40% wt.) and water. The polyhydric alcohols especially preferred are a mixture of PEG, propylene glycol and sorbitol. Optional use of synthetic surfactants such as sodium lauryl sulphate (SLS) is also disclosed in the invention. The invention of WO’273 for low TFM transparent soaps and the process requires minimal or no ethanol is to make a transparent soap, with a maturation time that is greatly reduced. The soaps prepared by this process show good transparency as well as good lather, feel and hardness.
Transparent soap composition as disclosed in WO'273 essentially requires the addition of 12-hydroxystearic acid for achieving transparency. The transparent soap composition of the present invention does not require the addition of 12-hydroxystearic acid or precursor thereof for achieving transparency of soap, as specified in WO'273.
WO1996004361 relates to a monohydric-alcohol-free process for making pour molded transparent and translucent personal cleansing bars. This prior art discloses a process for preparation of a molten mixture of soap by combining water, synthetic surfactants and water soluble organic solvents. The said process uses at least 50% insoluble sodium soap, water soluble organic solvents such as propylene glycol, reduced sugar alcohols such as sorbitol and lathering synthetic surfactants such as acyl is ethionates, acyl sarcosinates. The molten soap mixture prepared is then transferred into a bar forming mold or tube and allowing said molded unit to cool in acquiescent conditions into a mild, low smearing transparent personal cleansing bar.
WO'361 discloses a process for making a transparent soap wherein cooling is achieved at an Average cooling rates of 0.1 to 7.00C per minute to obtain improved transparency. ITC invention does not relate to the same and does not require cooling rates for improving transparency.
US5786311 relates to alcohol free process for making a transparent pour molded bar that exhibits good hardness characteristics. The process comprises of preparation of a molten mixture of soap by mixing 18 parts to 35 parts soap composed of at least 50% insoluble sodium soap from 14 parts to 32 parts water; from 5 parts to 37 parts synthetic surfactant wherein the said lathering synthetic surfactant has a critical micelle concentration equilibrium surface tension between 10 and 50 dynes/cm, as measured at 25 soluble organic solvent, wherein the combined level of water and water soluble organic solvent within the molten mixture is at least 40 parts; followed by pouring the said molten mixture into a bar forming mold or tube and allowing it to cool in acquiescent conditions into a mild low smearing transparent personal cleansing bar. US’311’ also discloses a monohydric-alcohol-free process for making transparent and translucent personal cleansing bars that uses water soluble organic polyols such as propylene glycol, PEG and sugar alcohols such as sorbitol mixtures in the process and provides the soaps that are mild to the skin, exhibit good hardness characteristics, low smearing and good lathering.
US311 discloses a process for making transparent soap by cooling the molten mix under acquiescent conditions in bar shaped molds or farming tubes at a rate of approximately 0.1° to 7.0° C. per minute to crystallize and solidify the mix and provide said transparent personal cleansing soap bars. The present invention on the other hand does not relate to the same and does not require cooling rates for improving transparency.
US 20010034311 relates to a monohydric alcohol-free transparent bar soap formulation that includes a high level of humectant solvent, yet has good hardness and wear characteristics. The soap formulation includes from about 38% to about 96% of one or more humectant solvents, such as glycerin and propylene glycol, from about 3% to about 20% of insoluble and/or soluble fatty acid soaps, such that the amount of insoluble fatty acid soap is at least about 3%.
US ‘311 disclose a soap formulation comprising 38% to about 96% solvent and 3% to about 20% soap. The present invention discloses a transparent soap with low ROW has composition comprising below 38% solvent and above 20% soap.
1430/DEL/1995 claims a transparent pour molded personal cleansing soap bar which comprises: (A) from 18 parts to 35 parts sodium soap; wherein at least 50% of said sodium soap is insoluble soap; (B) from 5 parts to 37 parts lathering synthetic surfactant; wherein said lathering synthetic surfactant has a critical micelle concentration equilibrium surface tension between 10 and dynes/cm, as measured at 25°C; (C) from 14 parts to 32 parts water; and (D) from 18 parts to 37 parts of a water soluble organic solvent; wherein the combined level of water and water soluble organic solvent within the bar is at least 40 parts. However 1430/DEL/1995 also recites its own limitation in that “The transparent bars comprise from about 18 parts to about 35 parts, preferably from about 20 parts to about 32 parts, more preferably from about 24 parts to about 32 parts soap”. Thus as per ‘1430 the preferable range of soap present in soap formulations, wherein transparency is achieved, is 32 parts. The present invention relates to transparent soap formulations wherein soap levels are not limited to 32 parts or below. Surprisingly the present inventors have derived at a soap composition wherein soap level is not limited to the 35 parts level and the transparency is maintained. The present inventors have noted that in soap composition comprising soap at 32 and above parts, lather is improved to desirable levels, RoW is reduced and desirable transparency is achieved.
Thus there is an unmet need in the art to impart transparency in soap formulations having more than 35% soap, wherein the soap is made using alcohol free route. There is also a need for transparent soap formulations that exhibit improved lather characteristics and reduced rate of wear. The present invention provides a soap composition which is transparent, comprises more than 35% soap and provides enhanced benefits of lather, hardness, rate of wear.
Object of invention
An object of the present invention is to overcome the drawbacks of the prior art.
Another object of the present invention is to provide a monohydric alcohol free transparent soap composition.
Yet another object of the present invention is to provide a soap composition with improved performance and characteristics.
Still another object of the invention is to provide a transparent soap composition with improved performance.
Moreover it is the object of the present invention to provide a transparent soap composition with excellent lather and improved rate of wear.

Further it is the object of the present invention to provide a process for the preparation of a transparent soap composition.
Still further it is the object of the present invention to provide an opaque soap formulation with improved lather and rate of wear.
Summary of the present invention
An aspect of the present invention is to provide a soap composition comprising:
a) 32-40 wt% of soap;
b) 0.25 – 3% of at least one performance enhancing agent; and
c) cosmetically acceptable additive(s).

Brief Description of the Accompanying Drawings
Figure-1 illustrates soap composition of the present invention in comparison to a soap composition wherein the critical elements of the present invention is absent.
Detailed description of the invention
The present invention provides a soap composition with improved performance and characteristics. The soap composition of the present invention has superior properties compared, in particular, to a transparent soap composition of the prior art. The transparent soap composition of the present invention provides desired properties like excellent transparency, lather and improved rate of wear.
The soap formulation of the present invention comprises:
a) 32-40 wt% of soap;
b) 0.25 – 3% of at least one performance enhancing agent; and
c) cosmetically acceptable additive(s).

The term “rate of wear” or “RoW” as used herein in terms of the weight percentage refers to soap that is lost during usage. Rate of wear is determined with a transparent soap bar weighing 100±5 grams that is at least 12 to 24 hours old. The bar is held in one hand and placed in a wide mouthed vessel containing 2-3 litres of water at a temperature of 25±2oC. The bar is rotated in and by one hand for 100 rotations. A sequence of two motions during which the bar returns to the initially held position is considered as one rotation. The bar is then dried. The procedure is repeated five times. The wear rate is reported as percentage of weight loss. An acceptable bar wear rate is from about 10% to 20%.
The term “performance enhancing agents” as used herein refers to ingredient(s) or agent(s) that enhance(s) the performance and characteristics of a given soap formulation. The term includes ingredients / agents that increase the hardness of the soap bar, improve the foaming attributes, enhance the lather, reduce the rate of wear and /or enhance the clarity or transparency of the soap bar.
The soap formulation comprises:
a) 32-40 wt% of soap;
b) 0.25 – 3% of at least one performance enhancing agent; and
c) cosmetically acceptable additives.
It is noted that the wt% concentration of soap and performance enhancing agent is critical to soap formulation of the present invention. Thus surprisingly soap formulations comprising performance enhancing agent at levels above 3% are not transparent (Example H). Again soap formulations comprising performance enhancing agent at levels below 0.2% are not transparent (Example I).
Again soap formulations comprising soap at levels above 40% along with 0.25 – 3% of at least one performance enhancing agent are not transparent (Example G). Soap formulations comprising soap at levels below 32% along with 0.25 – 3% of at least one performance enhancing agent is transparent, however it exhibits high rate of wear of the level of 33% and low lather volume – 365ml.
In one of its embodiments the present invention discloses transparent soap composition comprising a) 32-40 wt% of soap; b) 0.25 – 3% of at least one performance enhancing agent; and c) cosmetically acceptable additives. The transparent soap provides a RoW of 10 – 20 % and lather of about 400 – 500ml.
In another embodiment the present invention discloses an opaque soap composition comprising a) 32-40 wt% of soap; b) 0.25 – 3% of at least one performance enhancing agent; and c) cosmetically acceptable additives. The opaque soap provides a RoW of 10 – 20 % and lather of about 400 – 500ml.
Soap as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to sodium-, potassium-, magnesium-, ammonium-, triethanolammonium-, alkanolammonium- (and mixtures thereof) salt of fatty acids, preferably the sodium salt, having 8 to 14 carbon atoms (soluble soaps) and 16 to 24 carbon atoms (insoluble soaps). The soaps can be derived from coconut oil, palm kernel oil, palm oil, and the like and mixtures thereof. The amount of soap present in the composition ranges from 32 to 40wt %, preferably in the range of from 33 to 40 wt% and most preferably in the range of from 35 to 40 wt%.
Performance enhancing agent as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited towater soluble mono or di-carboxylic acids such as carboxylic acids with a carbon chain length of C1 – C3 or derivatives thereof. Preferably mono or di-carboxylic acids such as acetic acid, PEG/PPG derived carboxylic acid such as PEG-mono-acids, PEG-di-acids, PPG-di-acids, PPG-mono-acids and combination thereof. The amounts of performance enhancing agents range from about 0.2 to about 3 wt%. Surprisingly, it is noted that when the chain length of organic acid is increased above C4, for example from C8 to C20, transparent systems are not obtained. Thus fatty acids with chain lengths ranging from C8 to C20 do not act as Performance enhancing agents of the present invention.
Cosmetically suitable additives as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to humectants / solvents, synthetic surfactants, water, anti-oxidant, fragrance, colourant, opacifiers, pearlescer.
Humectants / solvents as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to glycerine, sorbitol, sucrose, propylene glycol, dipropylene glycol, butylene glycol, 1,7-heptane-diol, polyethylene and propylene glycols of up to 8,000 molecular weight. Preferred water soluble solvents are glycerin, propylene glycol, butylene glycol, sucrose and sorbitol.The amount of water soluble solvent ranges from 20 to 35wt%
Synthetic surfactant can be defined as non-soap surfactants that can be added to the formulation without affecting it transparency. The synthetic surfactants as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to sodium alkyl sulphates, sodium alkyl ether sulphates, alkyl benzene sulphonates, dialkylsulphosuccinates, sodium alkyl betaines, alkyl and dialkylethanolamines, sodium cocoylisethionate and alkoxylatedcetyl alcohol. The amount of synthetic surfactants ranges from 4 to 20 wt%.
The amount of water ranges from 16 to 25wt %.
Anti-oxidantas may be used in the soap formulation of the present invention and can be selected from a group comprising but are not limited to butylated hydroxyl toluene. 0.01 – 0.05%
Suitable perfume oils as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to natural and synthetic perfumes and mixtures thereof. Natural perfumes include the extracts of blossoms, stems and leaves, fruits, fruit peel, roots, woods, herbs and grasses, needles and branches, resins and balsams. Animal raw materials, for example civet and beaver, and synthetic perfume compounds of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type may also be used. 0.5 –2%.

Suitable colourants / opacifiers are any of the substances suitable and approved for cosmetic purposes. Colourants / opacifiers as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to cochineal red A (C.I. 16255), patent blue V (C.I. 42051), indigotin (C.I. 73015), chlorophyllin (C.I. 75810), quino-line yellow (C.I. 47005), titanium dioxide (C.I. 77891), indanthrene blue RS (C.I. 69800), Cosmenyl carmine (C.I. 12490), Vitasyn Tatrazine (C. I. 19140), Red 547 (C. I. 73900), Xenacos Brilliant Magenta B 125 (C. I. 45100) and madder lake (C.I. 58000). These colourants / opacifiers are normally used in concentrations of 0.001 to 0.1% by weight, based on the mixture as a whole.
Chelating agents as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to Ethylenediamine tetraacetic acid (EDTA), pentasodiumdiethylenetriaminepentaacetic acid (DTPA), sodium etidronate (EDHP) and citric acid. The amount of chelating agents ranges from 0.01 – 0.15%wt.
Suitable opacifiers and/or pearlizers (c) can be selected from the group of the mono and/or diesters of ethylene glycol, 1,2-propane diol and/or glycerin with C8-C24 fatty acids, of the esters of polyethylene glycols with C8-C24 fatty acids and/or of the styrene/acrylate copolymers. Particularly suitable opacifiers and/or pearlizers (c) are known by the INCI names: Glycol Distearate, such as for example the commercial product Cutina® AGS from Cognis, Glycol Monostearate, such as for example the commercial product Cutina® EGMS from Cognis, PEG-3 Distearate, such as for example the commercial product Genapol® TS from Clariant, PEG-2 Distearate, such as for example the commercial product Kessco® DEGMS from Akzo Nobel, Propylene Glycol Stearate, such as for example the commercial product Tegin® P from Goldschmidt and/or Styrene/Acrylates Copolymers such as for example the commercial products Joncryl® 67 from Johnson Polymers, Suprawal® WS from BASF and/or Acusol® OP 301 from Rohm & Haas.

Especially suitable opacifiers and/or pearlizers (c) for use in the soap formulation according to the invention are: Glycol Distearate, Glycol Monostearate, PEG-3 Distearate and/or Styrene/Acrylates Copolymer, titanium dioxide, mica, coated mica and mixtures thereof.
Opacifying and/or pearlizing agent are normally used in concentrations of 0-0.5 weight % (particularly titanium dioxide such as in an amount of 0.3%); an antioxidant, as may be used in the soap formulation of the present invention can be selected from a group comprising but are not limited to particularly tetradibutylpentaerythrityl hydroxyhydrocinnamate or butylatedhydroxytoluene ("BHT"); antioxidant are normally used in concentrations of 0.01-0.05 wt%.
Another embodiment of the present invention provides a process for the preparation of the transparent soap composition comprising steps of:
1. Dissolve soap in humectant solvent to obtain a melt.
2. Add remaining components such as transparency enhancers, surfactants, emotives, colourants, fragrances, until all solids have dissolved to obtain a transparent soap formulation of the present invention.
Yet another embodiment of the present invention provides a process for the preparation of the transparent soap composition comprising steps of:

1. Dissolve fatty acid, in the humectant solvent to obtain a melt.
2. Add base to the melt of step 1 to obtain neutralized molten soap.
3. Add remaining components such as transparency enhancers, sorbitol, surfactants, emotives, colourants, fragrances, until all solids have dissolved to obtain a transparent soap formulation of the present invention.

Still another embodiment of the present invention provides a process for the preparation of the opaque soap composition comprising steps:

1. Dissolving fatty acid, in the humectant solvent to obtain a melt.
2. Adding base to the melt of step 1 to obtain neutralized molten soap.
3. Adding remaining components such as performance enhancing agent, sorbitol, surfactants, emotives, colourants, fragrances, opacifiers / colourants to obtain a opaque soap formulation of the present invention.

Another embodiment of the present invention provides a process for the preparation of the opaque soap composition comprising steps of:

1. Dissolving soap in humectant solvent to obtain a melt.
2. Adding remaining components such as performance enhancing agents, surfactants, emotives, colourants, fragrances, opacifiers / colourants until all solids have dissolved to obtain a opaque soap formulation of the present invention.

The temperature during the process of preparation is maintained within a range of from about 60 °C to about 100 °C.

The homogenous bar soap formulation may be poured directly into moulds, trays, or containers to shape the bars. Alternatively the soaps can be cast into long cylindrical bars which can be cut and stamped into required size and shape.

The formulations show good temperature tolerance and provide transparent bars irrespective of whether they are cooled at ambient conditions or under cooler conditions. However, for the formulation to cool relatively quickly, the temperature of the pour mixture is preferably maintained from about 2° C. to about 14° C in cooling tunnels as described in prior art. After cooling the solidified bars can be cut and stamped or merely removed from the mould in the final form, as is known in the art.
The present invention is now illustrated by way of non limiting examples:

Example 1: Composition of soap formulation of the present invention (working example)
Table 1:
Working Working Working Working Working
Ingredients A B C D E
Soap 35.60% 36% 35.60% 33.40% 35.60%
Performance enhancing agent 1 (Acetic acid) 0.50% 0.50% 0% 0.50% 0.50%
Performance enhancing agent 2 (PEG-di-acid) 2% 0% 2% 0% 2%
Sodium lauryl ether sulphate (2) sulphate 11.90% 11.90% 11.90% 15.50% 11.90%
Propylene glycol 17.70% 17.70% 17.70% 20.70% 17.70%
Glycerine 3% 3% 3% 3%
Sorbitol 6.50% 6.50% 6.50% 6.50% 6.50%
PEG 400 2% 2% 2% 2%
Water 18% 20% 18% 21% 20%
Sodium chloride 0.50% 0.50% 0.50% 0.50% 0.50%
Fragrance 1.25% 1.25% 1.25% 1.25% 1.25%
Colourants 0.012% 0.012% 0.012% 0.012% 0%
Tetrasodium EDTA 0.06% 0.06% 0.06% 0.06% 0.06%
Butylatedhydroxy toluene 0.03% 0.03% 0.03% 0.03% 0.03%
Tetrasodiumetidronate 0.09% 0.09% 0.09% 0.09% 0.09%
Sucrose 0% 0% 0% 0% 0%
Opacifiers (TiO2) 0% 0% 0% 0% 0.50%
Others Qs to 100 Qs to 100 Qs to 100 Qs to 100 Qs to 100
Observation Transparent Transparent Transparent Transparent Opaque
RoW 18% 18% 19% 18% 18%
Lather (mL) 497 466 497 400 480

Preferable range for RoW is 15% to 20% and the range for lather is 400 to 500 mL.

Example 2: non working example
Table 2
Not Working (Critical Element Missing) Not Working (Critical Element Missing) Non Working (Critical Element outside range) Non Working (Critical Element outside range) Non Working (Critical Element outside range) Non Working (Critical Element outside range)
Ingredients E F G H I K
Soap 35.60% 33.40% 41% 35.60% 33.40% 29.70%
Performance enhancing agent 1 (Acetic acid) 0% 0% 0.5 0% 0.30% 0.5
Performance enhancing agent 2 (PEG-di-acid) 0% 0% 0% 3.50% 0% 0%
Sodium lauryl ether sulphate (2) sulphate 11.90% 15.50% 9.10% 11.90% 15.50% 13.30%
Propylene glycol 17.70% 20.70% 15% 17.70% 20.70% 10%
Glycerine 3% 3.00% 3% 9.00%
Sorbitol 6.50% 6.50% 2.50% 6.50% 6.50% 4.00%
PEG 400 2%
Water 20% 21% 22% 18% 21% 26.50%
Sodium chloride 0.50% 0.50% 0.50% 0.50% 0.50% 0.50%
Fragrance 1.25% 1.25% 1.25% 1.25% 1.25% 1.25%
Colourants 0.012% 0.012% 0.012% 0.012% 0.012% 0.012%
Tetrasodium EDTA 0.06% 0.06% 0.06% 0.06% 0.06% 0.06%
Butylatedhydroxy toluene 0.03% 0.03% 0.03% 0.03% 0.03% 0.03%
Tetrasodiumetidronate 0.09% 0.09% 0.09% 0.09% 0.09% 0.09%
Sucrose 2.50% 6.50%
Others Qs to 100 Qs to 100 Qs to 100 Qs to 100 Qs to 100 Qs to 100
Observation Not transparent Not transparent Not transparent Not transparent Not transparent Transparent
RoW 33%
Lather (mL) 324 365

Observation: It is observed that the wt% concentration of soap and performance enhancing agent is critical to soap formulation of the present invention. Thus surprisingly soap formulations comprising performance enhancing agent at levels above 3% are not transparent (Example I). Again soap formulations comprising performance enhancing agent at levels below 0.2% are not transparent (Example J). The soap formulations comprising soap at levels above 40% along with 0.25 – 3% of at least one performance enhancing agent are not transparent (Example H). Soap formulations comprising soap at levels below 32% along with 0.25 – 3% of at least one performance enhancing agent is transparent, however it exhibits high rate of wear of the level of 33% and low lather volume – 365ml (Example K).
Example 3: Comparative data to illustrate improved rate of wear
Table 3:
Sample Market sample A Market sample B* Example A Example C
RoW (%) 43 34 18 19
*Market sample made by monohydric alcohol route.

Monohydric alcohol requires the use of a monohydric alcohol like ethanol or isopropanol in large amount (typically 5-10%) for transparency. The monohydric alcohol is added during the manufacturing process and the resulting soap is allowed to mature over a period of 1-2 weeks during which time the alcohol evaporates leaving behind a transparent soap. Main advantage is transparency which the disadvantages are: use of flame proof reactors and other vessels, loss of value as the alcohol will have to be evaporated from the soap formulation.
Composition of market sample A: Propylene glycol, aqua, sodium laurate, sorbitol, sodium palmitate, sodium stearate, sodium lauryl sulfate, sodium soyate, sodium laureth sulfate, fragrance, cocamidopropyl betaine, triclosan, tetrasodium EDTA, sodium castorate, sodium metabisulfite, sodium cumenesulfate, sodium chloride, natural extract of sea weed, natural extract of lemongrass, glycerine, etidronic acid, BHT, CI 74260, CI 11680.
Composition of market sample B: Water, sodium palm kernelate, sodium palmate, sorbitol, glycerine, sodium rosinate, propylene glycol, sodium lauryl sulfate, PEG-4, isopropyl alcohol, perfume, sodium chloride, sodium meta bisulfite, tetrasodium etidronate, tetra sodium EDTA, BHT, CI12490, CI47005.

Example 4: criticality data of the amount of ingredients in the transparent soap composition.
Table 4:

Example 5: non working example:
Table 5:
Non Working (Acetic acid replaced with sodium acetate)
Ingredients Non working example L
Soap 33.54%
Performance enhancing agent 1 (Acetic acid) 0
Performance enhancing agent 2 (PEG-di-acid) 0
Sodium lauryl ether sulphate (2) sulphate 21.98%
Propylene glycol 21%
Glycerine
Sorbitol 9.30%
PEG 400
Water 4.37%
Sodium chloride 0.50%
Fragrance 1.14%
Colourants 0.00%
Tetrasodium EDTA 0.06%
Butylatedhydroxy toluene 0.03%
Tetrasodiumetidronate 0.09%
Sucrose
Sodium Acetate 0.50%
Others qs to 100%
Observation Opaque
RoW 25%
Lather (mL) 385

Glycerine, PEG 400 and sucrose are not critical to the present invention.