Science
Mechanism of Action
Upon application to the skin, Polyimide-1 undergoes a process of solvent evaporation, solidifying into a continuous polymer matrix. This film provides improved skin retention for formulations, minimizes ingredient loss, and offers a protective barrier, potentially sustaining the release or enhancing the efficacy of co-formulated components.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyimides generally exhibit robust hydrolytic stability across acidic to neutral pH ranges. However, formulations should avoid environments with highly alkaline pH (e.g., above 12), as hydrolysis may occur.
Conflicts
- Strong alkalis
- Inorganic acids
Safety
Safety Profile
EWG Skin Deep identifies Polyimide-1 with low concerns regarding cancer and allergies/immunotoxicity. SkinSAFE indicates it is generally considered safe, listed as 'Irritant Free', and suitable for sensitive areas like lips and eyelids, as well as for use on babies. The maximum cited concentration for cosmetic applications is 4%, primarily observed in hair care products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyimide-1 is a valuable film-forming agent, offering enhanced ingredient retention and skin protection with low irritancy and broad compatibility across most skin types.
Related
Similar Ingredients
Finding similar ingredients…