3 ms·
I'm also not sure what keeps the light from coupling into your skin, instead of just the hairs.
by monochromatic 11y ago
I'm also not sure what keeps the light from coupling into your skin, instead of just the hairs.
- OniBait 11y agoFrom what I recall on their original Kickstarter info, the frequency of the laser light only reacts with something that is in hair and not skin. The "breakthrough" was finding something that worked for blond hairs.