Researched by Helena DeMaria-Williams
Formula IngredientEmulsifier, SurfactantIsoceteth-20
INCI: Isoceteth-20
Isoceteth-20 is a polyethylene glycol ether formed by the ethoxylation of isocetyl alcohol (20 moles of ethylene oxide). It functions as a non-ionic surfactant and oil-in-water emulsifier, helping to solubilise oil-loving ingredients such as fragrances and lipophilic actives into water-based formulations. It is widely used across skincare, haircare, and personal care products.
Category
Emulsifier, Surfactant
Irritation Risk
Low
Skin Types
all skin types, sensitive, oily, dry, combination
What does this do in a formula?
emulsification, solubilisation of oil-soluble ingredients, gentle cleansing, formulation stability
Is Isoceteth-20 safe? Key considerations
Can Isoceteth-20 cause irritation?
Low RiskThe Cosmetic Ingredient Review (CIR) Expert Panel concluded that isoceteth-20 is safe as used in cosmetics. It is a mild non-ionic surfactant with minimal disruption to the skin barrier. No EU Annex II or III restrictions apply.
Does Isoceteth-20 increase sun sensitivity?
No RiskIsoceteth-20 does not increase photosensitivity.
Is Isoceteth-20 safe during pregnancy?
SafeNo known pregnancy concerns. Functions as a formulation aid with no systemic activity.
How does Isoceteth-20 work?
Isoceteth-20 is a polyethylene glycol ether formed by the ethoxylation of isocetyl alcohol (20 moles of ethylene oxide). It functions as a non-ionic surfactant and oil-in-water emulsifier, helping to solubilise oil-loving ingredients such as fragrances and lipophilic actives into water-based formulations. It is widely used across skincare, haircare, and personal care products.
Which products contain Isoceteth-20?
Shop products that contain Isoceteth-20
Niacinamide 10% + Zinc 1%
Natural Moisturizing Factors + HA
Argireline Solution 10%
Squalane Cleanser
Saccharomyces Ferment 30% Milky Toner
Azelaic Acid Suspension 10%
Granactive Retinoid 2% Emulsion
Soothing & Barrier Support Serum
Ascorbyl Glucoside Solution 12%
Niacinamide 5% Face and Body Emulsion
Balancing & Clarifying Serum
Multi-Antioxidant Radiance Serum
Lactic Acid 5% + HA
Lactic Acid 10% + HA
Aloe 2% + NAG 2% Solution
Hyaluronic Acid 2% + B5 (Original Formulation)
