How to Prepare Hair for a Lab Test Without Damaging It
https://thehairtestpreparationtips.ironwoodscope.com/posts/how-to-prepare-hair-for-a-lab-test-without-damaging-it
To prep hair for a lab test without damage, skip any dyes, relaxers, or heavy styling products for at least a week before. Wash your hair the day before using a mild, sulfate-free shampoo and no conditioner or leave-ins, as residues can skew results. Let it air-dry completely, then gently brush to remove tangles. Avoid heat tools, oils, or treatments that could coat the strands. If sweaty or dusty from the gym, rinse with plain water only, but don't scrub. Collect samples from clean, dry sectio…