One of my tats is on my leg. I had to shave that area before getting the tattoo two months ago and since then no hair has regrown where the tat is at. I shaved extra not knowing just how much room the tat would take up and the areas without a tat have grown back. I’ve seen people with scalp tatoos grow hair over them so I know it doesn’t completely suppress hair growth but I’m thinking it does limit regrowth.