Human hair affects millimeter radiowaves due to its keratin content.
December 2008 in “The American Journal of Cosmetic Surgery” Multi-pass laser skin treatments improved healing, reduced pain, and had no major complications.
January 2011 in “Junshi yixue” Longer exposure to high-power millimeter wave radiation causes more severe skin damage in mice.
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April 2018 in “Biotechniques/BioTechniques” A new method was developed to extract and analyze proteins from very short human hairs.
August 2023 in “Journal of controlled release” STAR particles can improve the effectiveness of topical hair growth treatments without causing skin irritation.