At my appointment, I learned that laser hair removal works by safely and selectively targeting pigment inside the hair follicle, generating energy in the form of heat at the root of the hair to destroy the hair without damaging the skin. Because of this, laser hair removal is said to work best for those with darker hair and/or fairer skin tones because the lasers have a better time picking up the pigment. However with the right laser level (almost) anything is possible. I say "almost" because throughout my three sessions so far, my technicians have reminded me that blondish red body hair is one of the trickiest hair colors to target with this technique.
Apart from the straight logistics, it's worth noting that:
1. The lasers create a bit of a jolt every time they target a section of skin. Those jolts become less and less alarming (not painful, because it feels more like a sudden rubber band snap that quickly goes away, as opposed to IDK, being pinched continuously) with every treatment because there's less and less hair to target.
2. Laser hair removal isn't a one and done process. Instead it takes 4-8 treatments spaced 6-8 weeks apart. So, it's by no means a sudden fix to removing all your hair at once — especially since they recommend not shaving between sessions so that you know what you're really working with. Though, that's not entirely required.