I only used it for a week and the first day I bruised my face the suction is so strong. And I didn't know to stop using tretinoin creams for 48 hrs before use. So the second time I tried it after bruising was gone... My pores closed up and I feel so clean and my face looks so fresh I'm so super surprised and loving how my face looks. Try the first two settings first. Make sure u open ur pores with steam before use and it works wonders. Love this product!!!