Sodium Laureth Sulfate
Sodium Laureth Sulphate (SLES) is a common surfactant used in many personal care and consumer products, usually as a 'gentler' alternative to the skin irritating sodium lauryl sulphatei. However, it can still trigger skin and eye irritationii and has been shown to produce skin changes in mice, whilst also interfering with natural skin enzymesiii. SLES is an 'ethoxylated' product, meaning it has been processed with ethylene oxide, and has therefore potentially been contaminated with 1,4-dioxane, which is a known carcinogenvi.
ii) SLES MSDS Chemtrade International
iii) CIR SLES
iv) Influence of cleansing on stratum corneum tryptic enzyme in human skin.