The advantage of waxing techniques requires removing the hairs from the root, which eventually becomes weaker, meaning reduced hair growth over a period of time.
Waxing results can last up to 6-8 weeks depending on previous hair removal methods and your current hair growth cycle.
Over a period of time with regular waxing you will notice the hairs getting finer as they grow back.
Ingrowing hairs are very common as with most hair removal techniques, to prevent ingrowing hairs, exfoliating and moisturising can help.