I don’t think I can ever say this enough – EXFOLIATE!
Exfoliating is, without doubt, the best way of preventing ingrowing hairs. Exfoliating will get rid of the dead skin that clogs follicles and help to lift individual hairs. But don’t do it too much, as it could aggravate the area. Two to three times a week is plenty. Use a loofah, a mitt or a scrub.
Moisturising the skin daily also helps as it softens the skin and makes it easier for hairs to push through without causing problems.
And it’s no good doing these things the day before a wax. No, you need to build them into your daily regime for them to have a long term impact.
Hope this helps.