Model irritant in dermatology research. Denatures stratum corneum proteins, solubilizes intercellular lipids, causes keratinocyte cytotoxicity, and triggers IL-1α release. Dose-dependent barrier disruption.
The research
Sodium Lauryl Sulfate is a surfactant irritant backed by a large, consistent body of clinical evidence (evidence tier 1 of 4). We track 3 studies for it, 3 reporting a positive effect.
Comprehensive review establishing SLS as the model irritant: mechanisms include protein denaturation of stratum corneum keratins, solubilization of intercellular lipid lamellae, direct keratinocyte cytotoxicity, and IL-1α release triggering inflammatory cascade; barrier recovery takes 5-7 days after single 24-hour SLS exposure
Irritant patch-test profile of detergents found sodium lauryl sulfate (SLS) produced the strongest irritant reactions versus sodium laureth sulfate and alkyl polyglucoside, supporting SLS as the most irritant of these common detergents and its use as the reference irritant.
Journal of Investigative Dermatology · 1990 · rct · n=20
Classic dose-response study (n=20): SLS produced concentration-dependent irritant contact dermatitis; TEWL increased linearly with SLS concentration (0.25-2%); barrier disruption was detectable at concentrations as low as 0.5% with 24-hour occlusion; established the gold standard SLS patch test methodology
Products with Sodium Lauryl Sulfate
In 110 products — most often cleansers (42), moisturizers (30), serums (24), from $12.05 to $357.25. Set up a profile to rank these for your skin. Click any product to learn more.
Natura Bissé Stabilizing Facial Cleansing Gel with AHA and PHA 200ml is a exfoliant by Natura. Key ingredients include Sodium Laureth Sulfate, Cocamidopropyl Betaine, Glycolic Acid.
Neutrogena Hydro Boost Water Gel Facial Cleanser for Dry or Dehydrated Skin 200ml is a water cleanser by Neutrogena. Key ingredients include Water, Glycerin, Hyaluronic Acid.
Piz Buin Tan & Protect Tan Intensifying Sun Oil Spray - Medium SPF15 150ml is a antioxidant serum by Piz Buin. Key ingredients include Water, C12-15 Alkyl Benzoate, Octocrylene.