The Dr. Brandt microdermabrasion scrub is very fine grained and is a fairly powerful scrub. I definitely could feel it working, and my skin was nicely smooth after each use. It is strong enough that I do not recommend it for those with sensitive skin. However, it is gentle enough that those who hate real coarse scrubs might like this one because of the fine grain. It also is rather adjustable. Rub hard for a more intense scrub and rub lightly for less. In many ways it reminds me of the Biolements Pumice Peel, which was one of my favorite products of last year.
I do have one nit picky complaint though about the packaging. Every time I use the Dr Brandt scrub, the screw on cap is difficult to get back on straight, making it difficult to close the lid. But that does not keep me from recommending the product.