Science
Mechanism of Action
Propoxytetramethyl Piperidinyl Dimethicone operates by establishing a non-occlusive, vapor-permeable hydrophobic barrier on the skin's surface. This barrier is crucial in reducing transepidermal water loss (TEWL), thereby optimizing skin hydration and contributing to a smoother, more refined tactile sensation. Its hydrophobic nature also imparts a subtle shine and improved slip, while notably offering UV resistance.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The ingredient exhibits good stability within typical cosmetic formulation parameters, maintaining its integrity across a pH range of 6 to 8.
Safety
Safety Profile
While the Cosmetic Ingredient Review (CIR) deems Propoxytetramethyl Piperidinyl Dimethicone safe for use in cosmetic products, highlighting its high molecular weight and subsequent poor skin absorption, and the US FDA recognizes it as a skin protector at low concentrations, significant environmental and broader health concerns have been raised. The European Union Ecolabel program has identified issues including its persistence in the environment, non-anaerobic degradability, suspected damage to fertility, clear evidence of endocrine disruption in at least one animal study, and potential for long-lasting harmful effects to aquatic life.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite favorable skin compatibility and a CIR 'safe as used' status, the significant environmental persistence, non-anaerobic degradability, and documented concerns regarding endocrine disruption and suspected fertility damage raise notable caution for precision skincare formulations.
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References
Sources