Dark (and itchy) underarms?!

Has anyone dealt with dark underarms? I switched deodorants years ago and only use spray deodorant now, it seems to help a bit. But I cannot shave my underarms, they get so dang itchy! Waxing takes care of both issues, but I hate the inbetween growth period, especially during the summer. I’ve looked into laser hair removal and just havent bit the bullet. And it’s hella expensive.