Sodium Lauroyl Isethionate
SLI
What it is
A mild anionic surfactant derived from isethionic acid and lauric acid. A true sulfate-free cleanser used as an alternative to SLS/SLES.
In this product: Co-surfactant and primary cleanser in sulfate-free formulas.
Dose & route, what actually matters
Dermal contact, rinse-off.
EUROPEAN UNION
Not restricted under EU Cosmetics Regulation 1223/2009 Annex III or V. No SCCS safety concern identified.
UNITED STATES
Permitted. CIR (2013) assessed as 'safe as used in rinse-off formulations' and at 50% in rinse-off products and 17% in leave-on.
The evidence
CIR (2013 amended final): 'Safe as used in rinse-off formulations', no significant regulatory concern flagged by EU SCCS.
regulatory · 2013 · source
California Prop 65: Not listed.
Where it hides
Editorial analysis of publicly available regulatory and peer-reviewed sources. Not medical advice. We name our evidence and link it, including when an ingredient is fine.