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Compositions and methods for improving skin appearance

A composition and skin tightening technology, applied in skin care preparations, pharmaceutical formulations, and cosmetic preparations, etc., can solve the problems that consumers cannot afford

Active Publication Date: 2022-01-14
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many consumers cannot afford or are unwilling to undergo such drastic cosmetic treatments

Method used

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  • Compositions and methods for improving skin appearance
  • Compositions and methods for improving skin appearance
  • Compositions and methods for improving skin appearance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0035] Accordingly, the particulate polymer of the oil dispersion may comprise or consist essentially of from about 80% to about 100% by weight of (meth)acrylic acid C 1 -C 4 Alkyl ester and from about 0% to about 20% by weight ethylenically unsaturated acid monomer, relative to the total weight of the polymer. According to an exemplary embodiment, the polymer consists essentially of one or more (meth)acrylic acid C 1 -C 4 Polymer composition of alkyl ester monomers. According to another exemplary embodiment, the polymer consists essentially of (meth)acrylic acid C 1 -C 4 Copolymers of esters and (meth)acrylic acid or maleic anhydride.

[0036] By way of non-limiting example only, the particulate polymer in the oil dispersion (which may optionally be crosslinked or may be non-crosslinked) may be selected from methyl acrylate homopolymer, ethyl acrylate homopolymer , methyl acrylate / ethyl acrylate copolymer, methyl acrylate / ethyl acrylate / acrylic acid copolymer, methyl ac...

Embodiment 1

[0142] Example 1: Combination of Thermoplastic Elastomer, Adhesive Polymer and Filler

[0143] The thermoplastic elastomer Kraton (25%) was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring was continued at 90°C for 1-2 hours until all of the Kraton polymer was dissolved and the polymer solution became clear. The required amount of oil dispersion (49% in isododecane) and silica silylate was added to the specific ratio Kraton / isoparaffin oil solution in a plastic container, and the solution was The mixer was mixed at 2500 rpm / min for 5 minutes. The final solution was kept at room temperature and sealed to avoid solvent evaporation.

[0144] Table 1 below shows a comparison of films formed from a composition prepared according to the present disclosure (Example 1 ) and three comparative compositions (Example 1C-1; 1C-2; 1C-3).

[0145] Table 1: Illustration of the excellent properties of combinations of thermoplastic elastomers, viscous pol...

Embodiment 2

[0149] Example 2: Thermoplastic Elastomer: Tacky Polymer Ratio

[0150] The preparation procedure of the composition of Example 2 was the same as that of Example 1 above. Table 2 below shows formulations of the present disclosure and films formed therefrom (Examples 2a; 2b; 2c), compared to two comparative compositions (Examples 2C-1; 2C-2).

[0151] Table 2: TPE: Tacky Polymer Optimal Min / Max Ratio Selection

[0152]

[0153]

[0154] Formulations and films were evaluated as described above. In the results, examples 2a, 2b and 2c all have good consistency G* > 100 Pa, with a phase angle of less than 45° and a Young's modulus > 100 kPa. Example 2C-1 with low Young's modulus (without oil dispersion) was too soft, and Example 2C-2 with high Young's modulus (without Kraton polymer) was too thin. Thus, the results show that with a high content of elastomer (Kraton), too soft films may be made, whereas with high content of viscous polymer (oil dispersion), the formulatio...

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Abstract

The present disclosure relates to compositions, films and methods for improving the appearance of skin. The composition comprises at least one thermoplastic elastomer, at least one adhesive polymer and at least one filler. Methods include applying the composition to the skin to firm the skin or conceal skin imperfections by forming a film on the skin.

Description

technical field [0001] The present disclosure relates to compositions and methods for improving the appearance of skin. Background technique [0002] The skin is mainly composed of two layers. The outer layer (or cuticle) is about 100 μm deep. The inner layer (or dermis) is approximately 3000 μm deep from the outer surface of the skin and is composed of a network of fibrous proteins called collagen (which provides skin firmness) and elastin (which provides skin elasticity and resilience). As people age, their skin produces less and less collagen and elastin each year. As a result, the skin becomes thinner and more brittle with age, and wrinkles inevitably form due to aging. [0003] Also, other skin blemishes may appear or become more noticeable as we age. For example, as a person ages, age spots—tan or gray sun-induced skin damage—may appear on sun-exposed skin. Consumers generally desire to improve the appearance of age-related skin imperfections such as wrinkles, cro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/90
CPCA61K8/25A61K8/8152A61K8/891A61K8/90A61Q19/08A61K8/8147A61K8/585A61Q1/02A61K2800/594A61K2800/262A61K2800/43A61K8/898A61K8/02A61K8/31A61K8/8117A61Q19/00A61K8/19A61K8/29A61K8/8194A61K8/88A61Q19/02A61Q17/04
Inventor A-L·S·伯纳德邓扬A·J·E·法兰L·道博西斯R·德比奥德H·裴
Owner LOREAL SA