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Quick answer: Both score equally on our risk model. Ammonium Laureth Sulfate is allowed in the EU and allowed in the US; Disodium Laureth Sulfosuccinate is allowed in the EU and allowed in the US.
| Property | Ammonium Laureth Sulfate | Disodium Laureth Sulfosuccinate |
|---|---|---|
| EU status | Allowed | Allowed |
| US status | Allowed | Allowed |
| Risk level | low | low |
| Banned in | — | — |
| Restricted in | — | — |
| Category | surfactant | surfactant |
| Where it hides | TRESemmé Moisture Rich Shampoo, Garnier Fructis Fortifying Shampoo, VO5 Herbal Escapes Shampoo | Eucerin Baby Wash & Shampoo, CeraVe Baby Wash, La Roche-Posay Lipikar Gentle Cleansing Body Wash |
Ammonium laureth sulfate is an anionic surfactant very similar in structure to SLES but uses an ammonium counterion instead of sodium. It produces abundant foam and provides excellent conditioning to the hair shaft during washing.
Disodium laureth sulfosuccinate is a mild anionic surfactant derived from the succinic acid ester of laureth alcohol. It is considered one of the gentlest ionic surfactants available and is specifically recommended for baby and sensitive-skin formulations.
Ammonium Laureth Sulfate: Ammonium laureth sulfate shares a similar safety profile to SLES. The CIR has concluded it is safe for cosmetic use. Like SLES, it may contain trace 1,4-dioxane from ethoxylation, addressed by standard manufacturing controls. It is not a carcinogen or endocrine disruptor. Mild skin irritation is possible in sensitive individuals at high concentrations but is not a concern at typical use levels in rinse-off products.
Disodium Laureth Sulfosuccinate: Disodium laureth sulfosuccinate is among the least irritating surfactants evaluated by the CIR. It does not penetrate the skin barrier significantly and is safe at concentrations used in cosmetics. No carcinogenic, mutagenic, or endocrine-disrupting effects have been found. It may contain trace ethylene oxide/1,4-dioxane from ethoxylation, addressed by manufacturing controls.
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