Hi there! Okay so, I have always shaved my underarm, although I have a few friends who get their underarms waxed. I have asked them whether it has caused darkening but neither of them are pretty sure. Some of them say that it doesn't and some say that it does but it is still a better option since regrowth is slower if the underarms are waxed instead of shaved and also that shaving can cause thicker regrowth of hair which is sort of true(talking from personal experience) But what I want to know is whether waxing really causes skin darkening. I have also heard that waxing on a regular basis can make the skin loose and contribute to premature wrinkles, because waxing tends to pull hair out of skin. It would be really nice if someone could help! Thanks.