Quote Originally Posted by Tina654
I'm surprised I haven't seen any posts worried about it being obvious that their hair and scalp have been chemically treated prior to the test. I found this information on a website, do I need to worry about this? I'm definitely freaking out..

"Commonly used hair products (e.g. shampoos, conditioners, sprays, mousses and gels) have no significant effect on Hair results. In fact, normal hair washing helps to remove external contamination. Extensive bleaching, perming and dyeing may damage the protein matrix of hair allowing a portion of the drug from the hair to be extracted, lowering the final quantitative result with certain drugs. Treated hair can be readily identified from the wash ratios and/or staining procedure. Treated hair results will be reported indicating that the correlation between the extent of drug use and the quantitative result were affected.
Abnormal Wash Ratio (AWR)
Terminology for samples showing an inconsistent relationship of drug detected in the wash as compared to drug detected in the hair sample. AWR samples can be caused by heavily damaged, treated or contaminated hair and may require additional testing. "
If you can have it professionally done by a hair stylist, then it shouldn't look out of the ordinary. I used to bleach mine all the time just for the Slim Shady look and never had much hair damage.