Ingredient glossary / Emulsifier
PEG-100 stearate
On the label: PEG-100 Stearate · Emulsifier
What it is
A stearic acid ester with a polyethylene glycol chain, usually paired with glyceryl stearate as a two-part emulsifier.
Emulsifiers: Emulsifiers hold oil and water together so a cream stays a cream.
In the research
1 PubMed papers mention it with skin, cosmetics or hair; the three most recent:
- Development and characterization of topical formulation for maintenance therapy containing sorbitan monostearate with and without PEG-100-stearate · International journal of cosmetic science, 2025
A paper is a paper, not a verdict: titles are listed so you can read them, and a study on cells or mice says little about a cream on a face.
Products whose label lists it
2 on the siteMatched from the ingredient list the supplier printed; the position in the list (first or thirtieth) is on each product page.
Made in the USA
Made in the USAOther emulsifiers
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