I contemplated the Clarisonic Mia for a good year or so and since I have such sensitive acne prone skin I didn't want to be one of those people that got worse skin from using it then let it sit in my vanity unused. I chose this for $30 and I figured if this did not work, I would be out a lot less. I use this every morning in the shower with Biore's Ice cleanser followed by the Biore Toner(I'm forgetting the exact name right now). I started using this the 2nd week of January and now almost 12 weeks later I would never ever go back to using just soap or face wash. Right now, my skin is absolutely flawless and clear. No breakouts or painful cystic bumps anywhere. I almost can't believe it. My skin has not been clear for 2-1/2 years. Now don't get me wrong, I have had some breakouts here & there but no where near the amount I had before using this tool. I feel like using this also progresses the healing time if I do have a blemish. As far as old acne scars, I still have many but they are fading probably just because of time not this tool. I love this tool and would absolutely recommend it to anyone with acne prone skin. I'm very cautious about what I use on my face, just looking at a new face wash breaks me out. On my right cheek area I had 6-7 blackheads that I never wanted to mess with because I know they would blow up into a huge blemish, I focused this tool on them 1 day and it must've brought the blackhead to the surface because it did become a full blown zit by the next day. This has happened with almost all the blackheads and now my cheek is clear. I would absolutely buy this tool again and I will be purchasing new heads for it very soon.