this post was submitted on 18 Nov 2024
807 points (98.1% liked)

Comic Strips

13002 readers
3157 users here now

Comic Strips is a community for those who love comic stories.

The rules are simple:

Web of links

founded 2 years ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[โ€“] [email protected] 4 points 1 month ago* (last edited 1 month ago) (1 children)

I had no idea, I don't really think of my family as having dark hair - but our hair is brown. Why are blonde hair follicles unaffected by laser treatment?

Edit: it seems like it's less to do with them being unaffected and more to do with how the targeting system for the lasers work? That seems like something that could be improved one day.

[โ€“] [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.