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BUTENDIOL/VINYL ALCOHOL COPOLYMER.

Valuable CAS 917249-64-0

A sophisticated film-forming polymer that creates an invisible, elastic membrane on skin's surface to deliver immediate lifting and smoothing effects. This amorphous copolymer leverages hydrogen bonding to form a flexible barrier that mimics young skin's elasticity while providing environmental protection.

Film former Emulsion stabilizer Viscosity controller Adhesive

Science

Upon water evaporation, polymer chains cross-link through hydrogen bonding to form a continuous, elastic film that mechanically contracts skin surface, creating a tensor effect that smooths fine lines and provides immediate lifting sensation while maintaining flexibility superior to standard polyvinyl alcohol


Research

High confidence
Effective range 0.5–5%
Optimal

1.5%

Key findings

  1. 01 Forms imperceptible film with high shrinkage rates providing physical smoothing and line masking with elasticity comparable to young skin
  2. 02 Delivers significant lifting sensation and enhances oil-in-water emulsion stability through amorphous structure

Transparency

Not commonly dusted

Not commonly used for dusting due to specialized film-forming function and technical formulation requirements


The Formula

Solubility
Water
Optimal pH 4 – 9
0 7 14

Stability

Highly soluble in cold water, stable under standard cosmetic conditions but requires hermetic sealing to prevent moisture-induced gelation as absorbent resin

Synergies

  • Oil-in-water emulsions
  • Water-based serums

Conflicts

  • Borates/Borax
  • High electrolyte concentrations
  • Strong oxidizing agents

Safety

CIR Status
Safe as used
Max tested
25%
Pregnancy
Safe
Sensitization risk Low

Non-absorbed due to high molecular weight, biodegradable and biocompatible with established safety profile for vinyl alcohol copolymer family


Your Skin

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

Our Assessment

Valuable

Excellent film-forming polymer for immediate lifting effects with broad skin compatibility and strong safety profile.


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