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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

Before a lab test, avoid harsh treatments like bleaching or hot tools for at least a week. Gently wash with a mild, sulfate-free shampoo and let it air-dry. Skip conditioners, oils, or styling products on test day, as residues can skew results. Comb through with a wide-tooth comb to remove tangles without pulling. If you must use heat, keep it on the lowest setting. The goal is a clean, natural strand that reflects your true hair health, not a damaged or coated one.