Science
Mechanism of Action
Upon application, this copolymer forms a continuous, flexible, and cohesive film on the skin surface. This film provides barrier properties, water resistance, and improves cosmetic pigment retention.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Key findings
- 01 A study (Aalto-Korte et al., 2008) showed negative sensitization results for the isobornyl acrylate monomer at 0.1% in petrolatum across 428 patients.
- 02 However, another study (Herman et al., 2017) reported a 2+ reaction to the isobornyl acrylate monomer in 1 out of 9 individuals at 0.05%.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Highly stable under standard conditions due to its bicyclic isobornyl structure, providing high thermal stability and a high glass transition temperature. It is sensitive to extreme alkaline environments (pH > 9) where degradation may occur.
Conflicts
- Strong oxidizing agents
- High concentrations of surfactants (can disrupt film formation)
- Strongly alkaline environments (pH > 9.0)
Safety
Safety Profile
The CIR Expert Panel found this copolymer safe for use in leave-on dermal products up to 25% concentration when formulated to be non-irritating. Sensitization risk exists for residual isobornyl acrylate monomer, as shown in some patch tests.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This film-forming copolymer is valuable for enhancing product wear, water resistance, and texture in a variety of skincare and cosmetic applications, generally considered safe when properly formulated.
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References
Sources