Yup, that's what causes the bumps because of the hormones. I've learned from years of waxing at home & found out later on from going to the salon and asked the lady there about that. She explained hormones makes the skin sensitive.
I wax at home using a DIY kit - Sally Hansen Wax Strips. It works great because inside the box has a blue liquid that soothes the skin after it's waxed.
I'm cheap in a way. I always get the Sally Hansen bikini wax kit because I can cut the strip into smaller pieces and save myself a lot of money. I bought that kit over 2 years ago and I still have about 4 long strips left. [inside the box was like 7 strips]
Oh oh, don't wax an hour or two before you go out to a special event. You'll get a really pink upper lip. Do it the night before.
I remember my very first salon visit and a really red upper visit! Everyone was asking me "What happened to your lip?!" I faked saying I ate really hot chili!