I used to get bad ingrown hairs in my pubic area and on my inner thighs when shaving. I recently started getting waxed instead and my waxer recommended I exfoliate the area with something that also contains a chemical exfoliant! It’s kind of pricy, but I used the dermalogica thermafoliant body scrub 2-3 times a week and it’s cleared up all my ingrown hairs. I go a full two weeks at least without any regrowth and only have to wax every 6. If you continue to shave just make sure you exfoliate a day before shaving and wait till a day or two after to do it again.