Pimple patches are making a comeback. These are perfect. It sucks in all the bad oils and that white nasty stuff that creates those big white pimples. You wont notice a huge difference right away but withing 2 to 4 hours you will notice a bigger difference. For me within 4 to 7 hours I will need to change the sticker. It also helps with the prevention of the nasty habit of picking, poking and prodding acne. That's what makes the acne worse and possibly spread because of the bacteria on our hands.