One of the best ways to avoid irritation and have smoother skin after removing hair is to exfoliate. You can exfoliate pretty much any part of the body. By doing so prior to a spa visit or DIY treatment, you’re prepping skin for the hair removal process.
Your bikini area is usually the most prone to ingrown hairs because the hair down there is usually more coarse than other parts of the body. You can use a gentle scrub to exfoliate skin a couple of days before waxing or shaving to alleviate that problem.