I tried this product on my skin off and on over the course of a week, using it once a day. I didn't notice any difference on any of my acne scars. I don't have any skin pigmentation issues, so the only thing I was using it for was to reduce scarring from teenage years. It is fairly lightweight, and doesn't feel greasy, but the smell is pretty atrocious; It's kind of a mix between a gas lawnmower cutting grass and paint thinner. As the smell is pretty horrible and I didn't notice any change to my scarring, I will not be buying this in the future, but appreciate that I was able to try the sample.