Hey everyone. I'm going to get my upper lip waxed sometime next week and I was wondering how long does it take for the hair to grow back and be noticeable? I know it probably varies from one woman to the next. Does it take like a month usually to grow back? I get my eyebrows waxed and they take around a month to grow back and the hairs don't grow back as thick as they used to which is good. I'm hoping thats what it will do for my upper lip.