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Transparent cosmetic composition

A cosmetic composition, a technology for the composition, applied in the directions of cosmetics, preparations for skin care, etc., can solve the problems of phase separation, turbidity, precipitation of the charged composition, etc.

Inactive Publication Date: 2012-07-11
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It is known that some effective skin care actives, usually in the form of salts, are particularly difficult to formulate in aqueous environments due to charges within the materials which may eventually cause significant precipitation or phase separation in the composition, which ultimately Makes the final product translucent or cloudy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9 and comparative Embodiment 1

[0108] Examples 1-9 represent non-limiting examples of skin care compositions described herein suitable for application to keratinous tissue. A comparative example is also described. Compositions are prepared by conventional methods from the following ingredients.

[0109] Table 1

[0110]

[0111] * 1 Natrosol (hydroxyethyl cellulose): purchased from Hercules Inc.

[0112] * 2 WSK (Tremeall hyaluronic acid): purchased from Shanghai Huiwen Biotech

[0113] * 3 Carbopol 981 (carbomer): purchased from Noveon

[0114] * 4 Sepiwhite MSH (undecylenoyl phenylalanine): purchased from Seppic

[0115] * 5 Elastab HP100 (hexamidine isethionate): purchased from Laboratoires Serobiologiques

[0116] * 6 Pyroter GPI-25 (glyceryl polyoxyethylene ether-25PCA isostearate): purchased from Ajinomoto

[0117] The compositions in all examples and comparative examples can be prepared as follows.

[0118] (1) Mixture A: In a vessel, mix all ingredients using a suitable mixer (su...

Embodiment 10-13 and comparative Embodiment 2

[0124] The compositions of Examples 10-13 and Comparative Example 2 were prepared by adding different amounts of 5% citric acid solution to the Example 1 composition. The turbidities of Examples 1, 8, 9, and 10-13 and Comparative Examples 1 and 2 were measured using a HACH 2100P nephelometer (HACH Company, USA) according to the turbidity measurement method, and are shown in Table 2 . Turbidity test range can be set to automatic mode. Each of the compositions in Examples 1, 10-13, and Comparative Example 2 was placed in a 4 mL transparent cuvette with a background of vertical lines. Take a picture of the cuvette and show it in figure 1 middle.

[0125] Table 2

[0126]

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Abstract

The present invention relates to a cosmetic composition comprising: a) from about 0.05% to about 10% of a salt form active; b) from about 0.001% to about 2% of a thickening agent; and c) water, wherein the composition has a turbidity no higher than about 10NTU, and has a pH in the range of about 5.0 to about 6.8.

Description

[0001] Cross References to Related Applications [0002] This patent application claims the benefit of PCT Chinese patent application PCT / CN2009 / 001203 filed on October 29, 2009. field of invention [0003] The present invention relates to transparent cosmetic compositions. Such compositions provide skin lightening, moisturizing and / or conditioning benefits, as well as an attractive clear appearance. Background of the invention [0004] Mammalian keratinous tissue, especially human skin, suffers from many extrinsic and intrinsic factors. Such external factors include ultraviolet radiation, environmental pollution, wind, heat, infrared radiation, low humidity, harsh surfactants, abrasives, etc. Intrinsic factors, on the other hand, include chronological age and other biochemical changes from within the skin. These factors, whether extrinsic or intrinsic, lead to visible signs of skin damage. [0005] Currently, many personal care products are available to consumers that a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/73A61K8/49A61K8/44A61K8/35A61Q19/00
Inventor C・李X・胡
Owner THE PROCTER & GAMBLE COMPANY