Science
Mechanism of Action
Polyisoprene forms a protective barrier on the skin, which helps to retain moisture and provides a softening effect. This barrier prevents moisture from evaporating, contributing to skin hydration and a smooth, soft surface.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Not a sensitizer.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyisoprene demonstrates robust resistance to inorganic chemicals, abrasion, tear, and flex fatigue. It possesses excellent thermal stability and resilience against oxidation, with synthetic forms exhibiting superior resistance to aging and weathering.
Conflicts
- Oil-based lubricants are noted to potentially break down polyisoprene, suggesting a general incompatibility with specific oil types.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed polyenes, including polyisoprene, safe for use in cosmetics at current concentrations and practices, with reported uses as high as 95%. It is rarely associated with allergic reactions or irritation, supported by studies showing no sensitization at 12.33% and related polyenes being non-irritating at 100%. While polyisoprene condoms are FDA-approved for medical use, there is no specific FDA cosmetic ingredient approval. European Cosmetics Regulation mandates manufacturers to ensure ingredient safety, though no specific SCCS opinion for polyisoprene was found.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyisoprene is a safe and versatile film-forming polymer that effectively supports skin hydration and softness, suitable for a wide range of skin types and cosmetic applications due to its protective barrier properties.
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References
Sources