Ingredient · dataset v56
Polymethylsilsesquioxane and fungal acne
No known trigger
Why it's not a known trigger
A silicone (silsesquioxane) resin of methyl-silicon units; no fatty chain, unmetabolizable backbone, like the ruled silicone rows.
Silicone basis.
Evidence strength
Judged neutral — no trigger evidence
Function
Silicone
Related silicone
- Amodimethicone — No known trigger
- Bis-Isobutyl PEG/PPG-10/7/Dimethicone Copolymer — No known trigger
- Bis-PEG-15 Methyl Ether Dimethicone — No known trigger
- Bis-PEG-18 Methyl Ether Dimethyl Silane — No known trigger
- Caprylyl Methicone — No known trigger
- Cetyl Dimethicone — No known trigger
- Cetyl PEG/PPG-10/1 Dimethicone — No known trigger
- Cyclomethicone — No known trigger
Sources
EU CosIng database — search the INCI name
Last reviewed: 2026-10-13 (dataset v56).
Questions
Does Polymethylsilsesquioxane trigger fungal acne?
No known trigger: A silicone (silsesquioxane) resin of methyl-silicon units; no fatty chain, unmetabolizable backbone, like the ruled silicone rows.
Does Polymethylsilsesquioxane feed Malassezia?
No known link: Polymethylsilsesquioxane is judged with no known trigger. One screened ingredient is not a product verdict — when in doubt, ask a dermatologist.
Is this medical advice?
No. We screen ingredient lists; we never diagnose, treat, or certify products. When in doubt, ask a dermatologist.
Check a full list containing Polymethylsilsesquioxane →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.