I have used this product for over a year. It does indeed lighten my dark stops, but it can not eliminate them. With consistent use, I have not developed any new dark spots. I have freckles, and they too have faded. I have tried many products including prescription products with 4% hydroquinone, and this product has been equally affective at one fourth the price. The Skin Store price with 20% off is better than Paula's own site which sometimes offers 15% off. I use many of Paula's skin care products, and I like all of them.