Ingredient · dataset v56
PEG/PPG-18/18 Dimethicone and fungal acne
No known trigger
Why it's not a known trigger
A silicone backbone carrying short PEG/PPG polyether side chains instead of fatty alkyls; an emulsifier with the same neutral silicone chemistry as dimethicone.
Common silicone emulsifier in sunscreens and foundations.
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 PEG/PPG-18/18 Dimethicone trigger fungal acne?
No known trigger: A silicone backbone carrying short PEG/PPG polyether side chains instead of fatty alkyls; an emulsifier with the same neutral silicone chemistry as dimethicone.
Does PEG/PPG-18/18 Dimethicone feed Malassezia?
No known link: PEG/PPG-18/18 Dimethicone 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 PEG/PPG-18/18 Dimethicone →
Not medical advice: we screen ingredient lists for potential triggers — we never diagnose, treat, or certify products. Dataset v56.