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

For a hair lab test, start by washing your hair 24-48 hours before collection using a mild, sulfate-free shampoo. Avoid conditioners, gels, or oils, as these can skew results. Gently towel-dry and let it air-dry completely without heat styling. Trim or brush gently if tangles form, but don't over-handle. This preserves the hair's natural state, ensuring accurate analysis without breakage or damage.