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BUTYL ACRYLATE/LAURYL METHACRYLATE/METHACRYLOYLOXYPROPYL DIMETHICONE COPOLYMER.

Valuable / FILM FORMING

A sophisticated hybrid polymer that combines acrylate durability with silicone flexibility to create breathable, transfer-resistant films on skin. This advanced film-former delivers exceptional longevity for color cosmetics while maintaining skin comfort through its permeable structure. Most recognized for its ability to achieve water resistance in sunscreens and transfer resistance in makeup formulations.

film-forming texture enhancer binding agent water resistance booster transfer resistance provider

Science

Functions as a graft copolymer where polyacrylate backbone segments provide strong skin adhesion and sebum resistance, while silicone side chains contribute water repellency and oxygen permeability. Upon solvent evaporation, it forms a uniform, flexible film that anchors active ingredients and pigments to the skin surface without compromising breathability.


Research

High confidence
Effective range 2–5%
Optimal

3%


Transparency

Not commonly dusted

High molecular weight and specialized film-forming function make dusting unlikely; requires specific dissolution methods for proper incorporation


The Formula

Solubility
Oil
Optimal pH 3 – 11
0 7 14

Stability

Chemically inert with excellent heat and UV stability; requires pre-dissolution in volatile silicones or hydrocarbons before oil phase incorporation

Synergies

  • Cyclopentasiloxane for dissolution
  • Isododecane for carrier compatibility
  • UV filters for enhanced adhesion

Conflicts

  • Highly polar alcohols
  • Strong oxidizing agents
  • High concentrations of anionic surfactants

Safety

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

Non-sensitizing and non-irritating due to high molecular weight preventing skin penetration; maximum 25% in leave-on makeup products


Your Skin

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

Our Assessment

Valuable

A technically superior film-former that delivers measurable performance benefits in long-wear and water-resistant formulations while maintaining skin compatibility across all skin types.


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References