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Cosmetic ingredient dictionary

Laureth-4 in cosmetics: what it is and what it does

Laureth-4 is a cosmetic ingredient that lets oil and water mix, so the product can wash dirt away. Open Beauty Facts finds it in 400 products, most often shampoos.

By Bravoora teamUpdated Sources checked 2 sourcesHow we check

What does Laureth-4 do in a product?

In a cosmetic product, Laureth-4 lets oil and water mix, so the product can wash dirt away, keeps oil and water mixed, and hides an unwanted smell or taste. The EU’s CosIng database lists these jobs for it: surfactant, emulsifying, masking and antistatic.

surfactantemulsifyingmaskingantistatic

What other names and numbers does Laureth-4 have?

CAS number
5274-68-0, 9002-92-0, 68439-50-9
EC number
226-097-1, 500-002-6, 500-213-3
CosIng reference
34915

Which products contain Laureth-4?

Open Beauty Facts finds Laureth-4 in the ingredient lists of 400 of the 22,021 products it has a list for, most often shampoos, hair care and bath and shower.

  • Shampoos93
  • Hair care59
  • Bath and shower41
  • Shower gels39

Products with it, by country of sale: France 150 · Germany 78 · Australia 31 · Spain 23.

Counted on 13 October 2026 from Open Beauty Facts, which volunteers fill from real packs: it shows where Laureth-4 turns up, not how much of the market it is.

On these listsSurfactants and cleansersEmulsifiers

Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dermatologists, dietitians and doctors

Sources

The job, the description and the EU annex entry are CosIng’s; the fragrance allergens are the EU Annex III names Bravoora’s label checker reads; the product counts are Open Beauty Facts’.

  1. European Commission: CosIng cosmetic ingredient database (functions, description, EU annex entry)
  2. Open Beauty Facts: product database, 77,506 products, read 13 October 2026, ODbL

Contains information from Open Beauty Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check

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