SURFACTANT PREPARATION HAVING REDUCED ENZYME DAMAGING

摘要

A method of protecting skin enzymes from the harmful effects of a cosmetic cleansing preparation which comprises water and one or more anionic surfactants. The method comprises using a cleansing preparation which has a pH value of from 4 to 7 and an SCTE (Stratum Comeum Tryptic Enzyme) value, determined following application of the preparation to human skin and standardized to a value of 100 for tap water, of from 65 to 95. The preparation comprises (i) one or more acyl-/dialkylethylenediamines which reduce the CMC of the one or more anionic surfactants and (ii) a buffer system of citric acid and citrate ions.