Sodium Laureth Sulfate (SLES)

Medium Concern

Surfactant

Also known as

sodium laureth sulfateslessodium lauryl ether sulfate

The concern

Can be contaminated with 1,4-dioxane (an IARC Group 2B probable carcinogen) during manufacturing. EWG rates moderate concern. FDA has recommended limits on 1,4-dioxane contamination.

Read the source: EWG / FDA

What to look for on labels

This ingredient may appear under any of the following names or codes on product labels:

Sodium Laureth Sulfate (SLES)
sodium laureth sulfate
sles
sodium lauryl ether sulfate

Learn more

Read the full evidence directly from the authoritative source.

View source: EWG / FDA

Commonly found in

Shampoos, toothpastes, body washes, face washes

Related findings on ProductSafer

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South Carolina Measles Outbreak Ends After Nearly 1,000 Cases

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Medium Concern

📰 News reportGoogle Health News

10Apr 26, 2026

Search all findings for Sodium Laureth Sulfate (SLES) →

Other surfactants to know about

Sodium Lauryl Sulfate (SLS)

LOW

Potent skin irritant.

Cocamide DEA

HIGH

IARC Group 2B possible carcinogen.

Data sourced from IARC, FDA, EFSA, WHO and EWG public data. For informational purposes only. This does not constitute medical or legal advice.

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