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In‐use tolerability of two new syndet bars with sodium cocoyl isethionate, disodium lauryl sulfosuccinate and wheat starch as major ingredients in differing relations: results of a cross‐over trial

In a cross‐over trial two different new syndet bars differing in their content of sodium cocoyl isethionate, disodium lauryl sulfosuccinate and wheat starch as major components were compared in the cleansing of hand skin of 72 healthy volunteers. The preparation designated ‘T’containing a higher amount of wheat starch turned out to be less irritant as judged from the parameters itching and erythema (p < 0.05, Wilcoxon's test for matched pairs). The present trial design looks appropriate to differentiate the irritancy potential of two chemically similar syndet bar preparations.