PEG-100 Stearate is a synthetic compound derived from polyethylene glycol and stearic acid. It primarily functions as an emulsifier, helping to blend oil and water-based ingredients in cosmetic formulations to create stable, smooth products. It can also act as a skin conditioning agent.
NoneEmulsifierEvidence: Medium
BenefitMinimal 0.5 / 4
RiskLow 0.5 / 4
Irritation
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
stabilizes emulsions
improves product texture
Things to watch
potential for mild irritation in very sensitive individuals
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Products with PEG-100 Stearate
Karité Confort Ultra Rich Body Cream
Score 4.4 / 5
Age Specialist 65+ Vitamin B3 Day Cream
Score 4.2 / 5
Weightless Hydrating Mask
Score 4 / 5
Silk Hydration Ultra‑Light After Sun Lotion (Coconut & Papaya)
What is the purpose of PEG-100 Stearate in skincare?
PEG-100 Stearate is used as an emulsifier to prevent oil and water ingredients from separating, ensuring a consistent product texture. It also contributes to the skin's smooth feel.
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