this post was submitted on 18 Nov 2024
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[–] [email protected] 5 points 1 month ago* (last edited 1 month ago)

Laser wavelengths targets melanin (a molecule with a specific color absorption and reflection), which is low in light colored hair or skin. Higher melanin density means a darker (appearing) color, so more opportunities for the light to react. This is why a dark hair color and light skin color has the best success with laser.