Alcohol hair strand tests are they affected by perms or dyes etc?

Alcohol hire strand tests are they affected by perms or dyes etc

Surface applications should not have any influence on test results. Leastwise that is the current consensus.

Hair testing has been available for other drugs for years, however prior to 2008, was not used for alcohol. Therefore, the literature is limited and relies primarily on EtG and FAEE studies.

[The hair test screens for ethyl glucuronide (EtG) and Fatty Acid Ethyl Esters (FAEE) both late stage metabolites of ethanol. ]