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Microneedling

Mechanical scalp treatment using rollers or stamps with needles ranging from 0.5 mm to 2.5 mm; host notes 1 mm to 2.5 mm seems more effective than shorter lengths. Can reactivate semi-quiescent stem cells, improve hair growth, and works especially well in combination with other treatments. Can cause pain, bleeding, and inflammation.

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“Microneedling has been shown to do two things. It has been shown to reactivate semi-quiescent populations of stem cells that are in that telogen phase, putting them back in antigen phase, and thereby stimulate more hair growth.”

huberman · The Science of Healthy Hair, Hair Loss and How to Regrow Hair · Apr 10, 2023 · 53:17 · open ↗

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