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Moumoujus

STYRENE/VP COPOLYMER.

Valuable CAS 25086-29-7 / FILM FORMING, OPACIFYING

Styrene/VP Copolymer is a synthetic polymer primarily employed to form a protective, elastic film on the skin, which enhances product wear and imparts a smooth tactile finish. This ingredient is widely recognized for its robust safety profile and significant functional benefits in diverse cosmetic formulations.

Summary

Film Forming Opacifying Viscosity Increasing Moisture Retention Texture Enhancer

Science

Mechanism of Action

This copolymer functions predominantly as a film-former, depositing a strong, elastic layer on the skin's surface. This film not only contributes to the longevity and structural integrity of cosmetic products (fixative action) but also provides a smooth, soft sensation by creating a protective barrier that helps reduce moisture loss. Additionally, it serves as an opacifying agent, diminishing product transparency, and as a viscosity increasing agent to optimize texture and consistency.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

Styrene/VP Copolymer is characterized as a high molecular weight, large molecular volume, and inert polymer. While it does not exhibit true solubility in water or oil, it may swell in specific organic solvents. Its primary utility in formulation is to enhance cosmetic product texture, contributing to a smooth and consistent feel in gels and creams.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
0.000038%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Styrene/VP Copolymer, along with related styrene and vinyl-type copolymers, is safe in current cosmetic use practices and concentrations. Due to its substantial molecular size, percutaneous absorption is not anticipated. Any trace levels of residual styrene or 1,3-butadiene monomers in finished products are considered to be well below levels of concern. It is approved for use under EU cosmetic regulations (CosIng) and is included in the FDA's Voluntary Cosmetic Registration Program (VCRP).

Your Skin

Skin Compatibility

No Normal
Yes Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Styrene/VP Copolymer is a valuable inert polymer, offering significant functional benefits as a film-former, texture enhancer, and moisture retention aid within cosmetic formulations, underpinned by a strong safety profile.

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