I've struggled with sudden onset adult acne for the past three years, and have tried so many products and regimes, including hormonal treatments and antibiotic creams. Nothing seemed to help. My sister in law had a Clarisonic, and swears by it. When I visited her and my brother last year, I was very impressed by her glowing, clear skin. So I decided to give Clarisonic a try. Two weeks into using the Clarisonic Mia Prima brush and Acne Brush head, my skin is clear and not a white or blackhead in sight. I'm a convert now, and have regained sone of my confidence and self esteem back. Thank you Clarisonic!