Researched by Helena DeMaria-Williams
Formula IngredientEmulsifier, SurfactantINCI: Laureth-12
Laureth-12 is a polyethylene glycol ether of lauryl alcohol (dodecanol), produced by ethoxylating lauryl alcohol with 12 units of ethylene oxide. It functions as both an emulsifier — helping oil and water phases blend stably in a formulation — and a mild surfactant/cleansing agent that helps break down and remove oils, dirt, and impurities from skin and hair. It is widely used in leave-on and rinse-off cosmetic products including primers, serums, cleansers, and hair colour treatments.
Category
Emulsifier, Surfactant
Irritation Risk
Low
Skin Types
all skin types, oily, combination, dry, sensitive
emulsification, texture stabilisation, mild cleansing, solubilising oil-based actives
Laureth-12 is generally considered mild and well-tolerated at typical cosmetic concentrations. As a member of the laureth ethoxylate family it may cause mild irritation in very sensitive or compromised skin barriers, though clinical irritation at cosmetic use levels is uncommon. No EU CosIng Annex II (banned) or Annex III (restricted) designations apply. Individuals with known sensitivity to polyethylene glycol (PEG) derivatives should patch test.
Laureth-12 is not a photosensitising ingredient. No sun protection precautions are required based on its presence in a formulation.
No specific pregnancy safety data was found via EWG Skin Deep or MotherToBaby for this ingredient. Based on its function as a mild surfactant/emulsifier and its widespread use in rinse-off and leave-on cosmetics, topical exposure at typical concentrations is expected to carry low risk. Consult a healthcare provider if concerned.
Laureth-12 is a polyethylene glycol ether of lauryl alcohol (dodecanol), produced by ethoxylating lauryl alcohol with 12 units of ethylene oxide. It functions as both an emulsifier — helping oil and water phases blend stably in a formulation — and a mild surfactant/cleansing agent that helps break down and remove oils, dirt, and impurities from skin and hair. It is widely used in leave-on and rinse-off cosmetic products including primers, serums, cleansers, and hair colour treatments.
Individuals with known sensitivity to PEG (polyethylene glycol) derivatives should review the considerations above before use.
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