Science
Mechanism of Action
This ingredient operates as both a skin conditioning agent and an emulsifier. Analogous to other dimethicone copolyols, it is theorized to form a protective occlusive barrier on the skin's surface, which helps to mitigate trans-epidermal water loss and consequently enhance skin hydration and tactile texture.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
This ingredient is a Per- and Polyfluoroalkyl Substance (PFAS), a class of chemicals of high concern due to their environmental persistence and potential for significant adverse health effects. Similar PFAS compounds are already prohibited in cosmetics within the European Union, rendering this ingredient highly undesirable for precision skincare formulations.
The Formula
Formulation
Stability
For related PEG-8 Dimethicone compounds, typical incorporation levels range from 1% to 5%. It should be introduced into the water phase and not subjected to temperatures exceeding 50°C (125°F). Alternatively, it can be integrated into emulsions once the temperature has cooled to below 50°C (125°F).
Conflicts
- Due to its classification as a PFAS, it is subject to regulatory bans and restrictions in regions like the EU.
Safety
Safety Profile
PERFLUORONONYLETHYL CARBOXYDECYL PEG-8 DIMETHICONE is classified as a Per- and Polyfluoroalkyl Substance (PFAS), a group of chemicals associated with environmental persistence and potential links to immunotoxicity, reproductive and developmental toxicity, cancer, cardiovascular effects, thyroid disruption, and liver effects. This specific compound has not undergone direct safety review by the Cosmetic Ingredient Review (CIR) Expert Panel. The U.S. FDA is actively investigating PFAS use in cosmetics. Of critical note, chemically analogous PFAS, such as Perfluorononylethyl carboxydecyl PEG-10 dimethicone and Perfluorononyl dimethicone, are prohibited in European cosmetics due to their identification as persistent organic pollutants (POPs) or persistent, bioaccumulative, and toxic (PBT/vPvB) substances, underscoring severe regulatory apprehension. It is also deemed 'unacceptable' by EWG Verified standards, and expert opinions indicate a 'likelihood of irritation' and that it 'may offer benefit in some capability but overall, proven to do more harm than good'.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Given its classification as a PFAS with documented environmental persistence and potential severe health implications, coupled with regulatory bans on similar compounds in key markets, this ingredient is strongly advised against in precision skincare formulations.
Related
Similar Ingredients
Finding similar ingredients…