Science
Mechanism of Action
The precise mechanism of action for POLYESTER-18 on the skin has not been specifically elucidated in available research. However, other polyester polymers frequently utilized in cosmetic formulations typically act as film-forming agents, creating a protective layer, or as viscosity modifiers to enhance product texture and stability.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Specific optimal pH ranges or stability considerations for POLYESTER-18 are not detailed in current research. Formulators generally evaluate cosmetic product stability within a broad pH range, typically between 4.5 and 8.5, which would also apply to formulations incorporating this ingredient.
Safety
Safety Profile
No specific safety assessment for POLYESTER-18 has been conducted by regulatory bodies such as CIR, SCCS, or FDA. While a separate hair dye ingredient, 'HC Red No. 18', has SCCS opinions on its safety at concentrations up to 1.5% in oxidative hair dyes and 0.5% in non-oxidative hair dyes, this does not directly apply to POLYESTER-18 as a general skincare ingredient. Broader evaluations by the CIR Expert Panel on other polymers, like dimethicone, indicate their safety in cosmetics, citing their large molecular weights and low skin absorption as factors. Based on this, general polyester materials are widely regarded as safe for topical use, though individual sensitivities to specific formulations cannot be entirely excluded.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Due to a lack of specific research on POLYESTER-18, its precise benefits and optimal usage in skincare remain largely unknown, though it may function as a textural agent based on general polyester characteristics.
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References
Sources