For people who notice a change overtime, I have found that it works well to set aside time twice a year to let your hair grow back for at least two weeks longer than you normally would between epilations. Keep exfoliating and moisturizing during this time. This lets your skin heal, and more importantly lets you get all your hair folicles back on the same cycle. I wait until I haven’t seen any little black spots signifying new hairs growing in for about a week, and then I epilate. My skin then looks as good as it did after the very first time I epilated, and it lasts much longer.