5 ms·
> The hair at the site of the mark will grow back white and show the identification number Is freezing a follicle turning the hair permanently white? I couldn'
by buran77 2y ago
> The hair at the site of the mark will grow back white and show the identification number
Is freezing a follicle turning the hair permanently white? I couldn't find anything on the mechanism. I'm surprised that people who are into body art (tattoos, piercings, etc.) didn't pick something like this up.
- MillironX 2y agoIt specifically kills the pigment cells within the follicle, causing the hair to grow back white [1]. If this case study [2] is anything to go by, then it would seem it isn't that effective on humans. [1]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1494747/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1494747/ [2]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8166665/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8166665/
- ndileas 2y agoIn that case (fascinating reading!), the person used far too cold of a solution, applied it for too long, and in consequence suffered a really bad injury, possibly compounded because she didn't seek treatment for 2 and a half weeks. Also, it was on a forearm, not the head or other hairy areas, so the mechanism of marking was more "kill the whole skin" than "kill pigment cells" specifically. It could be done in a much safer manner - I don't think it really proves much about effectiveness overall.