With harsh winters, my skin gets very dry and flaky. The Neutrogena Wave Sonic got rid of all of my dry skin, which no other face wash has been able to do. My face is so much softer and makeup goes on a clot smoother and cleaner. I haven't had it long enough to determine how much it prevents acne, but because acne is caused by clogged pores from dry skin cells, I believe this will be an extremely helpful product. I love it!