The best way to improve your skin in one week, use a good detox.  Using a good detox can have a lot of surprising benefits.  Now don’t use a basic detox or a disreputable detox.  They usually have a lot of diuretics in the bad ones, and in the plain old ones with just the basic ingredients, well they can cause your acne to break out worse at first and they can come with quite a few side effects as the toxins leave your body. But if it has extra ingredients like fibers, good bacteria, and most importantly vitamins and minerals as well as antioxidants, you will actually reduce the side effects, and you will even further benefit your skin.  They will nourish your skin as often acne has to do with a lack of vitamins and minerals, at least in the proper amounts.  So if you have the right combination of ingredients, a detox, a real detox, could really benefit your skin in about a week and give you a serious clearing of your acne among other things.  You just have to make sure that you are actually getting all the right ingredients and everything like that.