― Q: After I shave my legs, my skin is so irritated, and sometimes the hair grows back in within hours. How can I shave correctly so that it lasts longer and makes my skin feel better? ∙ A: First of all, make sure you aren't using a dull razor, which can cause cuts and hair growth more easily. Replace your razor after every 6 shaves or so, to prevent dullness. Then, rub a loofah over your legs to loosen any hiding hairs before you shave. Wet your legs, so the shaving cream can lather [...].