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C8-22 ALKYL ACRYLATE/BUTYL DIMETHICONE METHACRYLATE COPOLYMER.

Valuable CAS - / VISCOSITY CONTROLLING

A sophisticated Side-Chain Crystalline (SCC) polymer that functions as a high-performance film former and structural stabilizer in silicone-based systems. It is engineered to provide water resistance and long-wear properties while ensuring a breathable, non-greasy finish on the skin.

Film Forming Viscosity Controlling Texture Enhancer Waterproofing Agent

Science

This polymer utilizes long-chain alkyl groups to build a semi-crystalline network within the oil phase of a formula. It features a unique thermal trigger that allows it to transition from a crystalline state to an amorphous one at specific temperatures, enabling precise control over formula viscosity and the sustained release of active ingredients upon application.


Research

High confidence
Effective range 1–10%
Optimal

5%

Key findings

  1. 01 Clinical evaluations at 1-5% concentrations demonstrated significant enhancement in water and rub-off resistance for sunscreens and long-wear cosmetics through the formation of a flexible film.
  2. 02 Studies at 5-10% showed improved structural integrity and oil retention in silicone organogels without compromising spreadability.

Transparency

Not commonly dusted
Min. effective
1%
Red flag below
0.5%

As a functional polymer, concentrations below 1% typically fail to provide the necessary film-forming or structural benefits required for product longevity.


The Formula

Solubility
Oil
Optimal pH 3 – 9
0 7 14

Stability

Exhibits excellent stability in anhydrous and silicone-in-water emulsions. It is non-ionic and remains stable across standard cosmetic pH ranges.

Synergies

  • Silicone oils
  • UV filters
  • Volatile emollients

Conflicts

  • High concentrations of hydrophilic surfactants
  • Strong oxidizing agents

Safety

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

Classified as safe because the large molecular size prevents skin penetration; it remains on the surface to perform its film-forming function.


Your Skin

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

Our Assessment

Valuable

A high-precision structural polymer essential for creating long-wearing, water-resistant formulas with superior sensory profiles.


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References