Authority source
Safety basis: Health Canada
Health Canada assessment
Sodium Laureth Sulfate
SLESSodium Lauryl Ether SulfateSodium Lauryl SulfateSodium Lauryl Ether Sulphate
Surfactant
Sodium laureth sulfate is a type of soap that helps create a rich lather in products like shampoos and body washes. It also helps mix oil and water together in products like lotions and creams.
What it is
Sodium laureth sulfate is a synthetic surfactant made from a combination of fatty alcohols and sulfuric acid.
Found in
shampoos, body washes, soaps, lotions, creams, toothpastes
The concern
Some people may experience skin irritation, eye problems, or allergic reactions to sodium laureth sulfate, especially when used in high concentrations or with other harsh ingredients.
Legal status
Regulated by Health Canada, FDA, and EU/EFSA; banned in some countries due to environmental concerns.
Context-dependent
It is usually fine in rinse-off products, but higher concentrations, leave-on use, and sensitive skin can make it more irritating.
Evidence & sources
Article / explainer
Article / explainer
No highly relevant article explainer found yet.
Community questions
Community questions
Community discussions are not used as safety evidence and no highly relevant discussion is shown for this ingredient.
Related ingredient guides
Compare this ingredient with related ingredients and common alternatives.
Sodium Lauryl Sulfate
The closest surfactant comparison for irritation and cleansing strength.
Sodium Coco Sulfate
Another sulfate cleanser often checked in similar formulas.
Cocamidopropyl Betaine
A frequent co-occurring cleanser ingredient in shampoos and washes.
Sodium Cocoyl Isethionate
Another surfactant in the reviewed ingredient set.
Last updated: June 8, 2026