Abstract
Urines from women, collected before and after hair dyeing, were evaluated for mutagenic activity in the Ames Salmonella-Microsome Test. Thirty (30) sets of samples were tested as concentrates following removal of histidine on an XAD-2 resin column. None of the samples taken following the use of various Clairol products containing high levels of dyes gave any indication of increased mutagenic activity when compared to samples taken before hair dyeing. These results indicate that the use of hair dyes does not result in exposure of the urinary system to mutagens detectable in a sensitive microbial system, and thus suggest the absence of significant biological effects among users of hair dyes and persons occupationally exposed.
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