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PERFLUOROOCTYLETHYL TRIMETHOXYSILANE.

Avoid CAS 83048-65-1 / BULKING

PERFLUOROOCTYLETHYL TRIMETHOXYSILANE is an organofluorosilane designed to impart robust hydrophobic and oleophobic properties. It functions by forming low-surface-energy coatings that efficiently repel water, oils, and stains, enhancing product performance.

binding anti-caking skin conditioning hair conditioning

Science

This ingredient functions by creating durable, low-surface-energy coatings on surfaces, effectively repelling both water and oils. In skincare and cosmetic applications, it contributes to a smoother skin and hair feel, potentially adding shine, and can act as a binding or anti-caking agent to improve product consistency and texture.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

This ingredient is sensitive to moisture and will react slowly with water, suggesting instability in aqueous formulations. For optimal stability, it should be stored in a dark, dry environment.

Conflicts

  • water
  • moisture

Safety

CIR Status
Not reviewed
Sensitization risk High

PERFLUOROOCTYLETHYL TRIMETHOXYSILANE is classified as a Per- and Polyfluoroalkyl Substance (PFAS), a chemical class of significant concern. The FDA has reported insufficient safety data for 19 out of 25 common PFAS types in cosmetics. A similar PFAS, perfluorohexylethyl triethoxysilane, raised potential safety concerns in body lotion at its highest concentration. General PFAS have been linked to serious health issues including thyroid disruption, reproductive toxicity, developmental toxicity, and immunotoxicity in both humans and animals.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Avoid

Due to its classification as a PFAS and the associated significant safety concerns regarding human health and insufficient regulatory review, this ingredient should be avoided in precision skincare formulations.


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