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Propylene Glycol Stearate
Propylene Glycol StearateBarrier
Softens skin and helps oil and water mix.
What it does
It’s propylene glycol joined to stearic acid, a fatty acid. It softens skin and helps oil and water mix. It’s there for feel and texture, not to change your skin.
The evidence, graded
expert consensusUS safety reviewers (2015) assessed propylene glycol esters, which mostly soften skin and help oil and water mix. Propylene glycol stearate caused no significant irritation in patch tests at up to 55%, and products with 1.5–2.5% of it caused no allergy in 4,084 people. They judged the group safe as used, in products made not to irritate.Cosmetic 2015 · Cosmetic Ingredient Review ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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