Science
Mechanism of Action
Upon application, volatile solvents evaporate, depositing a sebum-insensitive film that helps retain active ingredients and improves cosmetic longevity. This film acts as a barrier, bolstering water and humidity resistance.
Research
Clinical Evidence
High confidence7%
Key findings
- 01 Clinical evaluations confirm non-irritating and non-sensitizing properties in human patch tests.
- 02 Effective as a film-former for water and humidity protection in sunscreens and leave-on products.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The polymer, inherently water-insoluble, becomes water-dispersible upon 100% neutralization with a base (e.g., TEA, AMP, KOH), or can be formulated into oil systems with long-chain amines.
Conflicts
- Strongly acidic environments (may cause precipitation)
- Cationic surfactants (potential for complex formation/instability)
Safety
Safety Profile
While approved up to 19.4% in specific applications like dentifrices, typical leave-on cosmetic use is generally ≤7%. It is deemed safe as used when formulated to be non-irritating.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This copolymer is a valuable ingredient, safely enhancing product performance by forming a water-resistant protective film on the skin and hair, suitable for all skin types.
Related
Similar Ingredients
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References
Sources