It definitely helps to eliminate under eye puffiness and keep acne at bay. When I first bought it, I did an hour session (not recommended) and I couldn't believe how well my face responded in terms of a lifted look. I used it for close to a year and when I took a break, I noticed. Over the past two years, I moved on to other devices, but I still pull this out every now and again.
You can buy high frequency machines on Amazon for far less than the Dermawand. In my opinion, they are "stronger", but less convenient.