I purchased this product hoping to get rid of a few dark spots on my chin. I figured what the heck it is $28.00 and the first ever at home microdermabrasion system. I was very pleased with this product! You apply it once nightly ever two to three days for a period of 8 weeks, every two weeks you go up a level, the highest level is four. It really made my skin much smoother and did lighten my dark spots. I plan on buying it again in a few weeks. It was so nice to be able to do this in my own home without having to spend a fortune on office vists to have it done. My family also noticed the difference it made on my face, and three people in my family decided to buy some as well, they have also been very pleased with this product.