CLIAMS:1. A dual phase liquid cleansing composition comprising
(i) a first phase comprising,
a. about 14 to 20% by weight of soaps of at least one fatty acid;
b. 5 to 15% by weight of at least one solvent;
c. 1.5 to 4% by weight of at least one acrylate based copolymer; and
d. 0.1 to 0.75% by weight of at least one cellulose based thickening agent; and
(ii) a second phase comprising,
a. 94 to 99 % by weight of first phase;
b. 0.0001 to 0.1% by weight of at least one coloring agent;
c. 0.45% to 2.5% by weight of at least one fatty alcohol; and
d. 0.5% to 2.5% by weight of at least one mineral.
2. The dual phase liquid cleansing composition as claimed in claim 1, wherein said soaps is selected from sodium, potassium or triethanolamine salts of fatty acid with a carbon atom chain length from 12 to 18; preferably of 12 – 14 carbon atoms chain length.
3. The dual phase liquid cleansing composition as claimed in claim 1, wherein said soaps is present in an amount preferably 14 to 18 % by weight.
4. The dual phase liquid cleansing composition as claimed in claim 1, wherein said solvent is selected from propylene glycol, sorbitol, glycerin, butylene glycol and mixtures thereof.
5. The dual phase liquid cleansing composition as claimed in claim 1, wherein said solvent is present in amounts preferably 8 to 12 % by weight.
6. The dual phase liquid cleansing composition as claimed in claim 1, wherein said acrylate based copolymer is selected from Carbopol Aqua SF1, Carbopol Aqua SF2, Carbopol 990, Aculyn 88, Aculyn 22, Aculyn XL, Aculyn 36.
7. The dual phase liquid cleansing composition as claimed in claim 1, wherein said acrylate based copolymer are present in amounts preferably 2 to 4% by weight.
8. The dual phase liquid cleansing composition as claimed in claim 1, wherein said cellulose based thickening agent is selected from hydroxyl ethyl cellulose, hydroxyl methyl cellulose, hydroxyl propyl cellulose, hydroxyl propyl methyl cellulose, carboxy methyl cellulose and methyl cellulose.
9. The dual phase liquid cleansing composition as claimed in claim 1, wherein said cellulose based thickening agent is present in amounts preferably 0.25 to 0.5 % by weight.
10. The dual phase liquid cleansing composition as claimed in claim 1, wherein said coloring agent is selected from dyes, pigments, lakes, pearlescent agents (e.g., mica and titanium dioxide), colored mica, chlorophyll, and metallic based, i.e., copper, zinc, chromium, manganese, and iron.
11. The dual phase liquid cleansing composition as claimed in claim 1, wherein said coloring agent is present in amounts preferably 0.01 to 0.05 % by weight.
12. The dual phase liquid cleansing composition as claimed in claim 1, wherein said fatty alcohol is selected from lauryl alcohol, cetyl alcohol, myristyl alcohol, decanol and stearyl alcohol.
13. The dual phase liquid cleansing composition as claimed in claim 1, wherein said fatty alcohol is present in amounts preferably 0.5 to 1.5% by weight.
14. The dual phase liquid cleansing composition as claimed in claim 1, wherein said mineral is selected from Kaolin and Talc.
15. The dual phase liquid cleansing composition as claimed in claim 1, wherein said mineral is in amounts preferably 0.5 to 1 % by weight.
16. The dual phase liquid cleansing composition as claimed in claim 1, said composition further comprises vitamins and derivatives thereof; sunscreens; preservatives; antioxidants; skin soothing and healing agents; chelators and sequestrants; fragrances, essential oils or combinations thereof.
17. A process for preparing the dual phase liquid cleansing composition comprising the steps of :
(i) preparation of first Phase:
(a) melting fatty acids and mixing them;
(b) adding solvents, acrylates polymer to the melted fatty acids while maintaining the temperature in between 60 - 650C;
(c) adding an alkali solution slowly, with continuous mixing to fatty acid melt of step (b) while maintaining the temperature in between 70 - 750C;
(d) adding cellulose based thickener and mixing completely;
(e) stopping heating and mixing properly and allowing to cool.
(ii) preparation of second Phase:
(a) melting fatty acids and mixing them;
(b) adding solvents, acrylates polymer to the melted fatty acids while maintaining the temperature in between 60 - 650C;
(c) adding an alkali solution slowly, with continuous mixing to fatty acid melt of step (b) while maintaining the temperature in between 70 - 750C;
(d) adding cellulose based thickener and mixing completely;
(e) stopping heating and mixing properly and allowing to cool
(f) adding Fatty alcohol, kaolin, colour and fragrance and mixing properly.
(iii) transferring the first phase and the second phase to the conventional swirl Jig machine and filling in a container, said phases being transferred in the ratio between 60:40 to 95:5;
said composition comprising
(i) a first phase comprising,
a. about 14 to 20% by weight of soaps of at least one fatty acid;
b. 5 to 15% by weight of at least one solvent;
c. 1.5 to 4% by weight of at least one acrylate based copolymer; and
d. 0.1 to 0.75% by weight of at least one cellulose based thickening agent; and
(ii) a second phase comprising,
a. 94 to 99 % by weight of first phase;
b. 0.0001 to 0.1% by weight of at least one coloring agent;
c. 0.45% to 2.5% by weight of at least one fatty alcohol; and
d. 0.5% to 2.5% by weight of at least one mineral.
.
18. The process as claimed in claim 17 wherein said dual phase liquid cleansing composition is as claimed in any one of claims 2 to 16.
,TagSPECI:Field of the invention
The present invention relates to personal care products more specifically to dual phase liquid cleansing composition

Background and the prior art
The ease and rapidness of foam rinsing (i.e., without spending too much time or using too much water) is another important attribute for consumer acceptance of the liquid cleansing products. Foam which does not rinse off quickly could mean, to users, that product residues are left on the skin and could be perceived as non-cleansed skin feel.

Consumers generally expect a rich, creamy lather from a shower gel/ body wash. With the proper fatty acid/s selection/combination the dense, creamy, slippery, luxurious and persistent foam can be delivered through shower gel/ body wash with conveniently easy and quick rinse ability.

Historically, the preparation of dual or multi-phase colored products has been challenging. Earlier attempts and disclosed prior art/s of making dual/multi-phase product packed in a single container is very problematic and if formulated it is difficult for the product to be stable, effective, maintained, preserved, and usable over the product shelf life.

Most of the multi-phase cleansing compositions focus on the delivery of higher amount of oils/conditioners onto the skin which are often accompanied with the disadvantage of leaving a greasy or oily residue on the skin even after the compositions is washed off. Additionally, formulas with high levels of oils and emollients are often expensive, and can exhibit undesirable separation of the oil and aqueous phases during storage, especially when subjected to the higher temperatures.

Major concern lies not in the formulation of the dual phase system but maintaining the swirled/striped patterns despite subjected to temperature fluctuations and random motions/shocks and movements experienced during the transport of the products. None of the known disclosures/prior arts explain the importance of the stability and intactness of the striped/swirled patterns during shipment of the products which is of prime importance for the product to reach the consumers.

It is known in the art to produce an oil-based colored phase in a clear aqueous phase, or vice versa wherein the immiscibility of the two phases will allow the creation of a cosmetic product along with attractive packaging.

US4335103 discloses a two-phase cosmetic cleansing cream composition that includes two separate and stable cosmetic composition phases which, when inter-mixed, yield a cleansing composition that is applicable to the face and other parts of the body. This composition comprises a first cleansing cream phase composition which includes an oil, a thickening agent, an emulsifier and water. The second phase, a gel phase, comprises water or a water-soluble material and a thickening agent. The two-phase cosmetic cleansing cream compositions are combined in a swirl-like or marble-like pattern within a container such that the cream hard gel phases are generally stable, separate and visibly distinct.

US4335103 is limited to composition wherein cream phase comprise oil as major component and does not contains soap or surfactants. The other phase in the composition is water based gel phase comprising 80-95% water soluble material. The two phases are mixed intimately using emulsifier in the cream phase and stabilized.

It has been observed that inclusion of an oil-based phase is undesirable for many reasons. Firstly incorporation of oil would generally require emulsifier to ensure the stability; secondly the inclusion of the oil would impact the foaming properties and further adds on the cost of the formulation; and thirdly it is difficult to combine the immiscible phases to form the complete cosmetic composition.

US4335103 fails to describe stable dual phase composition wherein both phase are aqueous based phases and without any oil content and with water making up as a major component (60 - 65%) in both the phases. Also it does not provide solution for the complications related to colour bleeding /migration that are undesirable to achieve stable visibly differentiated swirl patterns.

US2002100358 discloses dual phase product comprised of at least a first phase colored with an effective amount of a coloring agent to contrast with at least a second phase, whereby said at least a first phase is disposed to form a visually attractive pattern within said at least a second phase, and such pattern may be viewed through a container housing the novel composition of the invention and its enhanced spiral means.

US2002100358 describes use of silicones which imparts the conditioning but is often accompanied with the disadvantage of leaving a greasy or oily residue, even after the composition is washed off; thus failing to provide clean feel. Additionally, formulas with high levels of silicones are often expensive and are not as easy to emulsify as oils leading to stability issues. The surfactant used is at a dosage up to 1% only and thereby it describes compositions which are limited to the mild cleansing dual phase product primarily focusing on the deposition/conditioning properties. US2002100358 describes stable dual phase cosmetic compositions wherein said at least two separate substantially dispersed phases include at least one water continuous phase and at least one oil continuous phase. Further raising the level of skin conditioning agent (silicones/oil/emollients) in order to achieve increased deposition can negatively affect product lather performance and stability. Thus US2002100358 fails to explain a robust dual phase cleansing composition with both the phases being water miscible wherein water makes up as the major component in both the phases (> 60%).

US 7012049 describes a multiphase aqueous cleansing composition which when agitated forms a single application phase, and when left standing, the composition rapidly returns to an appearance having at least two visibly distinct aqueous phases. The cleansing composition is used as a body wash, shower gel, foam bath or shampoo. The aqueous multiphase cleansing composition comprises: a surfactant comprising a surfactant or salt thereof; one or more co-surfactants; a humectant; and a salt, wherein the cleansing composition is essentially free of a thickener or a detergent builder.

US 6429177 provides a single chamber transparent or translucent package and personal product composition where when standing, the product forms two or more visibly distinct phases and, when agitated, the composition forms a visible single phase. Specifically, when left standing, the composition comprises at least two visibly distinct aqueous phases and when agitated, the liquid aqueous phases are dispersible in one another and take on the appearance and lather properties of a conventional liquid personal wash composition (e.g. shower gel). When left to stand, the composition separates into two or more visibly distinct aqueous phases in a maximum period of 24 hours. The compositions of the invention may find application as body wash, shower gel, foam bath or shampoo i.e. as any liquid personal cleansing composition. The composition comprises of 5 to 35 wt % of surfactant selected from the group comprising anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants, and mixtures thereof; 1 to 12 wt % of a thickener; 4 to 20 wt % of a polyalkylene glycol; and non-chelating mineral salt selected from the group consisting of alkali metal or alkaline earth sulfates, bisulfates, carbonates, bicarbonates, and mixtures thereof wherein said non-chelating mineral salt is present in an amount sufficient to induce a separation of said aqueous composition into at least two distinct aqueous layers that are present in a volume ratio of upper to lower phase of from 4:1 to 1:4.

US 7012049 and US 6429177 discloses cleansing composition with both the phases being aqueous. These prior arts mention two/three phase systems which separate when kept undisturbed. Such kind of formulations needs to be shaken or agitated physically or intimately mixed by some mechanical device to form a uniformly dispersed or single application phase like a liquid, a lather or a foam, before being used for its intended purpose (as a cleansing product).

Still further, after such agitation the system should be allowed to stand undisturbed for quite some period (3 – 24 hrs) in order to return to its multiphase system.

Agitating the system, each time prior use/waiting for the system to regain its multiphase appearance can be problematic for the consumer’s usage on daily basis as a conventional cleansing product while bathing.

The present invention addresses and overcomes the long felt needs of consumer providing, rich bathing experience with no such prior requirement of shaking the systems and can be directly used by the consumer. Furthermore it also provides dual phase system in the form of swirls/stripes which are stable and attractive in terms of consumer friendly usage.

The present invention uses the technology of formulating the aqueous dual phase system without use of any oil, but still maintains the swirl patterns of the system through the suspension property to hold the swirl patterns intact.

Object of the invention

It is an object of the invention to overcome the drawback of the prior art.

It is another object of the invention to provide a stable dual phase cleansing composition.

It is yet another object of the invention to provide a shower gel products with superior in-use attributes of premium and creamy foam along with the easy and quick rinse characteristics in a two or more phased systems.

It is a further object of the invention to provide a cosmetic formulation that has cleansing property without much compromising on the post wash benefits has been long felt.

It is also an object of the invention to provide a visually appealing product that can be used readily in the form of dual phase product housed in single container, maintaining desired aesthetic appeal while preserving the conventional cleansing properties and post wash benefits.

Summary of the invention

Accordingly to one aspect of the present invention there is provided a dual phase liquid cleansing composition of the present invention comprises
1. first phase comprising,
a. about 14 to 20% by weight of soaps of at least one fatty acid;
b. 5 to 15% by weight of at least one solvent;
c. 1.5 to 4% by weight of at least one acrylate based copolymer; and
d. 0.1 to 0.75% by weight of at least one cellulose based thickening agent; and
2. second phase comprising,
a. 94 to 99 % by weight of first phase;
b. 0.0001 to 0.1% by weight of at least one coloring agent;
c. 0.45% to 2.5% by weight of at least one fatty alcohol; and
d. 0.5% to 2.5% by weight of at least one mineral.

Accordingly to another aspect of the present invention there is provided a process for preparing the dual phase liquid cleansing composition as described herein comprising the steps of :
(i) preparation of first Phase:
(a) melting fatty acids and mixing them;
(b) adding solvents, acrylates polymer to the melted fatty acids while maintaining the temperature in between 60 - 650C;
(c) adding an alkali solution slowly, with continuous mixing to fatty acid melt of step (b) while maintaining the temperature in between 70 - 750C;
(d) adding cellulose based thickener and mixing completely;
(e) stopping heating and mixing properly and allowing to cool.
(ii) preparation of second Phase:
(a) melting fatty acids and mixing them;
(b) adding solvents, acrylates polymer to the melted fatty acids while maintaining the temperature in between 60 - 650C;
(c) adding an alkali solution slowly, with continuous mixing to fatty acid melt of step (b) while maintaining the temperature in between 70 - 750C;
(d) adding cellulose based thickener and mixing completely;
(e) stopping heating and mixing properly and allowing to cool
(f) adding Fatty alcohol, kaolin, colour and fragrance and mixing properly.
(iii) transferring the first phase and the second phase to the conventional swirl Jig machine and filling in a container, said phases being transferred in the ratio between 60:40 to 95:5.

Brief description of accompanying figures

Figure 1 illustrates the graph of percentage of panellists response versus critical (desirable) attributes.

Detailed description of the invention

The present invention provides a personal cleansing composition with two phases, physically in contact with each other packed in a single container which are visually distinct with at-least one phase consisting of a colour and stable even when subjected to high temperatures like 50 to 60ºC. It has been found by the present inventors that the stability of swirls/striped patterns of the dual phase were maintained even during shipment of the product owing to the robustness of the formulation.
The stable dual phase liquid cleansing composition of the present invention comprises

1. a first phase comprising,
a. about 14 to 20% by weight of soaps (consisting of fatty acid with a carbon atom chain length from 12 to 18 and preferably of 12 – 14 carbon atom chain length) of at least one fatty acid;
b. 5 to 15% by weight of at least one solvent (consisting essentially of Propylene Glycol, Glycerin, Sorbitol);
c. 1.5 to 4% by weight of at least one acrylate based copolymer; and
d. 0.1 to 0.75% by weight of at least one cellulose based thickening agent; and
2. a second phase comprising,
a. 94 to 99 % by weight of first phase;
b. 0.0001 to 0.1% by weight of at least one colouring agent;
c. 0.45% to 2.5% by weight of at least one fatty alcohol; and
d. 0.5% to 2.5% by weight of at least one mineral.

Soaps according to the present invention is selected from sodium, potassium or triethanolamine salts of fatty acid with a carbon atom chain length from 12 to 18; preferably of 12 – 14 carbon atoms chain length. Soaps are present in amounts 14 to 20 % by weight, preferably 14 to 18 % by weight.

Solvent according to the present invention is selected from propylene glycol, sorbitol, glycerin, butylene glycol and mixtures thereof. Solvents are present in amounts 5 to 15 % by weight, preferably 8 to 12 % by weight.

Acrylate based copolymer according to the present invention is selected from Carbopol Aqua SF1, Carbopol Aqua SF2, Carbopol 990, Aculyn 88, Aculyn 22, Aculyn XL, Aculyn 36. Acrylate based copolymer are present in amounts 1.5 to 4.5% by weight, preferably 2 to 4% by weight.

The cellulose based thickening agent according to the present invention is selected from hydroxyl ethyl cellulose, hydroxyl methyl cellulose, hydroxyl propyl cellulose, hydroxyl propyl methyl cellulose, carboxy methyl cellulose and methyl cellulose. Cellulose based thickening agent are present in amounts 0.1 to 0.75 % by weight, preferably 0.25 to 0.5 % by weight.

Colouring agent according to the present invention is selected from dyes, pigments, lakes, pearlescent agents (e.g., mica and titanium dioxide), colored mica, chlorophyll, and metallic based, i.e., copper, zinc, chromium, manganese, and iron. Colouring agent are present in amounts 0.0001 to 0.1 % by weight, preferably 0.01 to 0.05 % by weight.
Fatty alcohol according to the present invention is selected from the group consisting of lauryl alcohol, cetyl alcohol, myristyl alcohol, decanol and stearyl alcohol. Fatty alcohol is present in amounts 0.45 to 2.5% by weight, preferably 0.5 to 1.5% by weight.

Mineral according to the present invention is selected from Kaolin and Talc. Mineral are present in amounts 0.5 to 2.5 % by weight, preferably 0.5 to 1 % by weight.

The composition of the present invention may further include other optional ingredients including vitamins and derivatives thereof (e.g., ascorbic acid, vitamin E, tocopheryl acetate, and the like); sunscreens; preservatives for maintaining the anti-microbial integrity of the cleansing compositions; antioxidants; skin soothing and healing agents such as aloe vera extract, allantoin and the like; chelators and sequestrants; and agents suitable for aesthetic purposes such as fragrances and essential oils.

The composition of the present invention can be prepared by the process comprising the steps of :
(i) preparation of first Phase:
(a) melting fatty acids and mixing them;
(b) adding solvents, acrylates polymer to the melted fatty acids while maintaining the temperature in between 60 - 650C;
(c) adding an alkali solution slowly, with continuous mixing to fatty acid melt of step (b) while maintaining the temperature in between 70 - 750C;
(d) adding cellulose based thickener and mixing completely;
(e) stopping heating and mixing properly and allowing to cool.
(ii) preparation of second Phase:
(a) melting fatty acids and mixing them;
(b) adding solvents, acrylates polymer to the melted fatty acids while maintaining the temperature in between 60 - 650C;
(c) adding an alkali solution slowly, with continuous mixing to fatty acid melt of step (b) while maintaining the temperature in between 70 - 750C;
(d) adding cellulose based thickener and mixing completely;
(e) stopping heating and mixing properly and allowing to cool
(f) adding Fatty alcohol, kaolin, colour and fragrance and mixing properly.
(iii) transferring the first phase and the second phase to the conventional swirl Jig machine and filling in a container, said phases being transferred in the ratio between 60:40 to 95:5.

The composition of the present invention can be formulated with superior aesthetics, with at least one phase being opaque and overcomes the drawbacks of the in-use characteristics of multiphase systems like oily residue feel and low foaming properties yet maintaining the stable, intact patterns during transport and at elevated temperatures such that total formulation do not blend and mix together to form a substantially homogenous product. Thus the present invention provides a platform to delight the consumer with the benefits of superior sensorials with enhanced aesthetics.

The invention is now illustrated by way of non-limiting examples.

Example 1
The dual phase composition of the present invention has been prepared with the following components as shown in Table 1
Table 1

Process of preparation
(i) First Phase:
• the fatty acids were weighed and melted in a container at 70 - 750C;
• the fatty acids were mixed and solvents, acrylates polymer were added while maintaining the temperature in between 60 - 650C;
• an alkali solution was prepared and then added slowly, with continuous mixing to fatty acid melt while maintaining the temperature in between 70 - 750C;
• cellulose based thickener was then added and mixed completely;
• heating is stopped and mixed properly and allowed to cool.
(ii) Second Phase:
• the fatty acids were weighed and melted in a container at 70 - 75°C;
• the fatty acids were mixed and solvents, acrylates polymer were added while maintaining the temperature in between 60 - 65°C;
• an alkali solution was prepared and then added slowly, with continuous mixing to fatty acid melt while maintaining the temperature in between 70 - 75°C;
• cellulose based thickener was then added and mixed completely;
• heating is stopped and mixed properly and allowed to cool;
• weighed quantity of Fatty alcohol, kaolin, colour and fragrance were added and mixed properly.
(iii) Both the phases are transferred in the ratio of 90:10 (First phase : Second phase) to the conventional swirl machine such as Wimco Swirl Jig Filling Machine and filled in the container.

Example 2
Various compositions were prepared as mentioned in Table 2 following the process as mentioned in example 1. These various compositions were evaluated for stability.

Table 2

Observations
• Example D and E shows non-working examples with amounts of soaps beyond 14 to 20% by weight.
• Example F and G shows non- working examples with amounts of acrylate copolymers beyond 1.5 to 4% by weight.
• Example H and I shows non-working examples with amounts of the thickener beyond 0.1 to 0.75% by weight.
• Example J and K shows non- working examples with amounts of the mineral beyond 0.5% to 2.5% by weight.
• Example L and M shows non-working examples with amounts of fatty alcohol beyond 0.45% to 2.5% by weight

Features considered while determining the various properties of the samples A to M,
· Aesthetic Property: Stability of the patterns (not mixing) even at elevated temperatures like 500C.
· Functional Properties: Lather Volume, Suspending property of the formulation,
· Sensorial properties: Creaminess of Foam, Moisturisation feel, Smoothness & softness of skin.
· Steadiness of the patterns during shipment by subjecting to stress studies simulating the transportation conditions.

Analysis of Suspending Property
The procedure for analyzing the suspendability of the formulation was assessed by the standard stability test protocol. The procedure for analyzing the suspendability of beads (Florabeads - Floratech, USA, 0.3% by weight of florabeads having 300µm average particle size) was assessed. Briefly, (i) the each of the sample was stored at 50°C for a period of four weeks, (ii) the sample was visually examined for settled particles or floating particles, (iii) a grade of ‘Suspending’ was given to a said sample if no settled or floating beads were observed. A grade of ‘Not suspending’ was given to a said sample if no floating beads were observed in said formulation sample.

Analysis of Swirl Pattern Stability
· Sample was prepared by producing hand filled swirls and subjecting it to 50°C for a period of four weeks and monitored weekly;
· The sample was visually examined for the disturbance, constancy/steadiness of the swirl patterns including the tendency of settling/floating of the swirl patterns.
· A grade of ‘Suspending’ was given to a said sample if no change in the swirl pattern was observed. A grade of ‘Not suspending’ was given to a said sample if any change in the swirl patterns were observed in said formulation sample.

Analysis of Lather Volume
Lather Volume measurement was done by Kitchen Food Blender Process;
5 percent solution of the product is prepared in 300 ppm water, (Ca : Mg = 3 :2). 100ml solution of the product is poured into the blender along with jar of a mixie fixed with 450 W motor covered and blended on low speed for exactly 60 s. The blender is operated at an input voltage of 230 + 10 V at the low setting (popular kitchen mixies have nearly identical speeds of rotation). The blender jar then is held inverted over the 1000 ml capacity measuring cylinder and any lather adhering to the jar is scooped out and allowed to drain. The lather volume is measured after level line off the top surface of the foam. All experiments are carried out at an ambient temperature of 27 + 2°C.

Analysis of Sensorial Property
· Sensory parameters like Creaminess of foam, moisturized skin feel & Smooth & soft skin; were assessed by doing a small panel study. Panelists (around 5 – 7) were asked to use the prototype on their fore-arms. During use the panelists were asked to rate on the creaminess of foam generated. After few minutes (5-10 min) post wash the panelists were asked the perception of Moisturised feel of Skin & Smoothness & Softness of Skin attributes.
· A grade of ‘+++’ was given to a said sample if the attribute (Creaminess of foam, moisturization/smoothness of skin) was ‘Very much perceived’. A grade of ‘++’ was given to a said sample if the attribute was ‘Slightly perceived’ & a grade of ‘+’ was given to a said sample if the attribute was ‘Not much perceived’ in said formulation.

The results of all the properties are shown in Table 2 above.

Example 3
Experiments were conducted to demonstrate that quick rinse ability is attained by the present composition only in the defined amount and not in any other amounts/proportions.

A study was conducted to map the performance of ITC Prototype B (composition similar to the one mentioned in Table 2 - the working example B) in comparison with market product. Formulations in identical packaging were presented to consumers in a blinded manner to use it as per the regular body cleansing product and evaluate for overall assessment of following attributes. A 26 panel evaluation study was conducted by submitting blinded/coded samples to the panelists and asked them to use the feedback collected.

1. Assessment of Pre use Product Sensorials
· Product dispensability- Consumers dispensed the product from its container onto their palm to evaluate it for dispensability.
· Product Thickness- Consumers assessed the consistency by feeling the product between their fingers/palm.
2. Assessment of In use Product Sensorials
· Product Spread-ability- consumers assessed spread-ability based on the effort involved in spreading the product & applying on to the body.
· Speed of Lather- consumers assessed the speed with which the foam was generated.
· Amount of Lather- consumers assessed the quantity of foam was generated
· Quality of Lather – consumers evaluated the quality of foam in terms of its creaminess
· Rinse-ability- consumers assessed the effort involved in rinsing off the product from their body.
3. Assessment of Post use Product Sensorials
· Skin Freshness: Consumers assessed the freshness felt.
· Skin Moisturized feel: Consumers assessed the extent of moisturized / dry feel on skin.
· Skin Softness: Consumers assessed the extent of softness of skin.

Consumers followed the same steps for both the products and were then asked to give their feedback on the above attributes of the products. A graph of percentage of panellists response versus critical (desirable) attributes is plotted to show the overall assessment as shown in Figure 1.

Inference:
It is evident from Figure 1 that the Prototype B BW (present invention) performed superior to the Market sample BW in most of the aspects including the important parameters of during use properties (Lather & Quick Rinse properties). In the post use properties, the prototype BW was found at par against the benchmark product. Though there was no difference in the “Softness” parameter; the “Freshness” was marginally better in prototype BW while “Moisturization” benefit was found to be marginally better in benchmark product.