My armpits are dark due to Veet wax strips, what should I do?

So at first when I got armpit hair I started shaving , at first everything was fine but then )I start getting razor bumps and Ingrown hairs so I stopped shaving and used veet , and after using it a couple of times I realized that my armpits are getting dark or like not that dark , not like black or sth but different than my body color (a little) or Idk if it is a little , I returned back to shaving and everything got worse , I'm having ingrown hairs now and idk what to do