Sodium Laurel Sulfate

This inexpensive detergent is commonly used in cosmetic cleansers, hair shampoos, bath and shower gels, bubble baths, etc. - It is probably the most dangerous ingredient used in skin and hair-care products. In the cleaning industry SLS is used in garage floor cleaners, engine degreasers, car-wash soaps, etc. It is very corrosive and readily attacks greasy surfaces.

Sodium laurel sulfate is used throughout the world for clinical testing as a primary skin irritant. Laboratories use it to irritate skin on test animals and humans so that they may then test healing agents to see how effective they are on the irritated skin.

Is potentially harmful to skin and hair. Cleans by corrosion. Dries skin by stripping the protective lipids from the surface so it can't effectively regulate moisture.