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C4-8 ALKYL ACRYLATE.

Valuable / NOT REPORTED

A high-performance synthetic polymer engineered to create a breathable, hydrophobic shield on the skin's surface. It is primarily utilized in precision skincare to lock in active ingredients and provide superior resistance against environmental humidity and water.

Film former Hair fixative Water-resistance enhancer

Science

As the carrier solvent evaporates post-application, the polymer chains align to form a flexible, microscopic film. This matrix acts as a physical moisture-lock barrier that prevents trans-epidermal water loss while simultaneously anchoring other active compounds to the skin to prevent them from being washed or rubbed off.


Research

High confidence
Effective range 0.1–5%
Optimal

1.5%

Key findings

  1. 01 Concentrations between 1.5% and 5.0% demonstrated high efficacy in maintaining cosmetic durability and providing significant resistance to high humidity levels.
  2. 02 Usage at 0.1% to 2.0% effectively serves as a secondary film-former, enhancing the long-wear properties of topical formulations without increasing skin sensitivity.

Transparency

Not commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Because it is effective as a secondary film-former at levels as low as 0.1%, concentrations below this threshold may be considered 'label dusting' where no functional barrier benefit is provided.


The Formula

Solubility
Oil
Optimal pH 4 – 9.5
0 7 14

Stability

Highly stable across a broad pH spectrum; however, formulators must avoid excessive heat to prevent premature polymerization or matrix degradation.

Synergies

  • Hydrophobic active ingredients
  • UV filters
  • Volatile silicones

Conflicts

  • High concentrations of surfactants
  • Strong oxidizing agents

Safety

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

Safety is contingent on ensuring residual monomers, specifically Butyl Acrylate, remain below 100 ppm to eliminate the risk of sensitization.


Your Skin

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

Our Assessment

Valuable

An essential technical component for ensuring the longevity and water-resistance of high-performance topical formulations.


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