Well, it's a high glycolic percentage and the ph is correct for the aha's to be effective so that means you will get results- I am using up my last bottle of the 10% Alpha Hydrox oil free gel, I've been using it for several years and have had awesome results....I can't wait to try the new souflle.
I would say to start out using it at night, you may get some stinging, or maybe you won't...if your skin reacts ok, you can use it in the am too but be sure to wear sunscreen on top, which I think the daytime moisturizer has. Good luck, you will love it! It's the most effective over the counter aha out there and believe me. I've done my research!