What is PEG-8 Stearate?
Chemically, PEG-8 Stearate is an emulsifier that helps oil and water mix. A PEGylated stearate emulsifier rated 3/5. As a stearic-acid ester it is also commonly avoided for fungal acne.
You may see it on labels as Peg-8 Stearate, Peg 8 Stearate, so it can hide under more than one name in an ingredient list.
Where PEG-8 Stearate shows up
PEG-8 Stearate is commonly formulated into almost any lotion or cream, where it keeps the oil and water phases blended. Separately from clogging, its irritancy is rated 1/5 — low, so it's unlikely to sting or sensitise on its own.
Is PEG-8 Stearate bad for acne-prone skin?
PEG-8 Stearate sits in the grey zone. Plenty of people tolerate it well; those who break out easily may prefer to keep it low on their ingredient lists.
Note for fungal-acne (malassezia) sufferers: PEG-8 Stearate is commonly avoided in fungal-acne routines, since it falls into the fatty-acid or ester families the yeast can feed on. The evidence there is looser than for comedogenicity — see our fungal-acne checker for context.
Non-comedogenic alternatives
If you're avoiding PEG-8 Stearate, these lower-risk ingredients serve a similar role and are gentler on pore-prone skin:
- Glyceryl Stearate — rated 1/5 (Low risk).
- Cetearyl Alcohol — rated 2/5 (Low risk).