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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

To prep your hair for a lab test without causing damage, skip harsh chemical treatments and heat styling for at least a week beforehand. Simply wash your hair with a gentle, sulfate-free shampoo 24-48 hours prior, avoiding any conditioners, gels, or oils that might interfere with results. Let it air-dry completely, and don’t brush or comb excessively to prevent breakage. This keeps your sample clean and natural.