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Moumoujus

BUTADIENE.

Optional CAS 106-99-0; 25339-57-5 / NOT REPORTED

A synthetic polymer building block used exclusively in copolymer form (such as Styrene/Butadiene Copolymer) for skincare applications. This versatile ingredient creates flexible, water-resistant films while providing excellent viscosity control in oil-based formulations. Found primarily in specialized products like hydrocolloid patches and long-wear cosmetics where durability and adhesion are paramount.

Summary

viscosity controlling film forming texture enhancer adhesion promoter

Science

Mechanism of Action

Functions as a film-forming polymer that creates a flexible, hydrophobic barrier on skin surfaces. The copolymer structure provides rheological modification in oil systems while forming durable films that reduce transepidermal water loss and enhance product longevity and wear-time.

Research

Clinical Evidence

Medium confidence
Effective range 3–10%
Optimal

5%

Key findings

  1. 01 Demonstrated effective rheology modification and gelling properties in low-polarity oil systems with enhanced flexibility and water resistance
  2. 02 Provided structural integrity and skin adhesion in hydrocolloid patch applications, creating optimal occlusive healing environment

Transparency

Dusting Analysis

Not commonly dusted

Not commonly used for dusting due to specialized polymer applications and limited versatility outside specific formulation contexts

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Exceptionally stable across broad pH ranges due to non-polar synthetic polymer backbone, particularly effective in oil systems containing squalane, mineral oil, and isododecane

Synergies

  • Squalane
  • Mineral oil
  • Isododecane
  • Other non-polar oils

Conflicts

  • Highly polar solvents
  • Pure water-based systems without emulsifiers
  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel confirms safety of Styrene/Butadiene Copolymers in current usage patterns. Raw 1,3-Butadiene monomer is carcinogenic but strictly controlled as residual contaminant below 0.1%

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Optional

A specialized polymer ingredient valuable for specific applications requiring durability and water resistance, but limited in versatility for general skincare use.

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