Science
Mechanism of Action
While the precursor terpenes can act as skin permeation enhancers by subtly disrupting the lipid architecture of the stratum corneum and interacting with keratin, polyterpenes themselves are largely employed for their physical properties. In formulations, they predominantly form a surface film and increase the viscosity of oil-based components, aiding in texture and product stability.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyterpene resins demonstrate robust color stability, excellent thermal resistance, and good resilience against aging and light exposure. Hydrogenated variants further enhance color integrity, thermal stability, and weather resistance, with encapsulation potentially boosting overall terpene stability.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that 'polyenes,' a group encompassing polyterpenes and related ingredients like polybutene and polyethylene, are safe for use in cosmetics at current concentrations. Polyethylene, a related polyene, has been used safely at concentrations up to 95% in lipsticks. While specific SCCS opinions for POLYTERPENE were not identified, minor irritation was noted with polybutene above 15% concentration. Generally, these ingredients are considered well-tolerated.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyterpene is a valuable formulation aid, enhancing product texture and stability while demonstrating low irritancy and comedogenicity.
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