To prevent ingrown hairs after waxing, gently exfoliate the waxed area 2-3 times a week using a gentle scrub or exfoliating mitt. This helps to remove dead skin cells and encourages proper hair growth. Additionally, keep the area moisturized with a light, non-comedogenic lotion to maintain healthy skin. Avoid wearing tight clothing in the waxed area, as this can cause friction and contribute to ingrown hairs.