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Flexible aqueous depilatory article

A technology for depilatory agents and products, applied in cosmetic preparations, cosmetic preparations, cosmetics, etc., can solve the problems of poor contact hair removal process, difficulty in accurate placement, lack of hair, etc.

Inactive Publication Date: 2012-10-31
PROCTER & GAMBLE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applicants have found that substrates that are too rigid lack the ability to conform to areas of the body that have unwanted hair thereon, resulting in poor contact between the depilatory composition and the unwanted hair and thus an unsatisfactory hair removal process , while a base that lacks rigidity will collapse during treatment and be difficult to place accurately on unwanted hair

Method used

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  • Flexible aqueous depilatory article
  • Flexible aqueous depilatory article
  • Flexible aqueous depilatory article

Examples

Experimental program
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Effect test

Embodiment

[0078] The following example further describes and demonstrates one embodiment within the scope of the present invention. The examples are given for illustrative purposes only and are not to be construed as limitations of the invention, since many variations thereof are possible.

[0079] Preparation ingredients

weight percentage (%)

Deionized water

84.42

Acrylic / VP Crosspolymer (Ultrathix P-100) 1

3.00

Sodium Silicate (42% w / w in water) (Cognis 60) 2

2.08

Calcium hydroxide 3

4.50

Calcium Thioglycolate Trihydrate 4

6.00

[0080] 1 Ultrathix P-100, purchased from International Specialty Products Inc. (ISP)

[0081] 2 Sodium silicate (Cognis 60), purchased from Cognis

[0082] 3 Calcium hydroxide, Reag.Ph.Eur.puriss.p.a., available from Sigma-Aldrich Co.

[0083] Calcium 4-thioglycolate trihydrate, 99.8%, was purchased from BRUNO BOCK Chemische Fabrik GmbH & Co.

[0084] A 400 mL high ...

Embodiment C

[0090] Using a template and doctor blade, on plastic parts HDPE 85% LLDPE 15% blend polymer film (made on a Merritt-Davis casting line with LBI 85% M6030 and Exxon Mobil 15% LD2001; 23 microns thick and cut to length 4.6 cm, and 3.2 cm wide), the above formulation was set to be 0.3 mm thick, 3.0 cm wide, and 3.5 cm long, so that the formulation coverage area of ​​the present invention was centered along the width of the film and was 1 mm away from the peripheral edge at one end of the film length. According to the American Standard Measurement Method (ASTM) D2923-06, the plastic part HDPE 85% LLDPE 15% blended polymer film has a rigidity of 0.47 g / cm as measured on a hand feel tester.

[0091] Comparative Example A and Inventive Example C were rated for picking up and handling by 15 male panelists in a paired study. In the study, panelists were blinded to the identity of the examples. As far as the embodiment of the present invention is concerned, the embodiment is numbered C...

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Abstract

A depilatory article comprising a substrate and an aqueous depilatory composition disposed on said substrate, forming a coated region of the substrate, wherein said substrate has a rigidity in the range of from 5.00 g / cm to 0.08 g / cm, preferably from 3.00 g / cm to 0.08 g / cm, more preferably from 1.80 g / cm to 0.10 g / cm, even more preferably from 0.80 g / cm to 0.15 g / cm and even more preferably still from 0.60 g / cm to 0.25 g / cm and wherein the aqueous depilatory composition comprises water in an amount of greater than 40%, preferably from 50% to 98%, more preferably from 60% to 95% and even more preferably from 70% to 90%, by weight of the aqueous depilatory composition.

Description

field of invention [0001] The present invention relates to depilatory articles comprising a chemically active depilatory composition disposed on a substrate. Background of the invention [0002] Depilatory compositions for chemically active removal of unwanted hair are known. Such compositions may contain reducing agents to degrade keratin in the hair, thereby weakening the locks. These compositions may take the form of creams, lotions, etc., and they may be applied to the unwanted hair in a variety of ways, for example with a squeegee. The weakened locks are then scraped away using a scraper or another suitable implement, thereby completing the epilation process. This can be a messy and cumbersome process for users of depilatory creams or lotions, and does not provide a way to seal the aqueous depilatory composition from drying out. These deficiencies can be overcome or mitigated by disposing the depilatory composition on a substrate. Substrate based depilatory products...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/02A61K8/46A61Q9/04
CPCA61Q9/04A61K8/19A61K8/46A61K8/0208A61K8/8182
Inventor P·J·史密斯P·A·塞格尔R·K·帕西S·米特拉N·S·布罗伊莱斯
Owner PROCTER & GAMBLE CO