Laura S.Verified PurchaseIt took some time for my skin to adjust. I had to do every other day to start and then I got some redness… But if I sandwiched it with cetaphil eye moisturizer my skin acclimated. I also had to take a week off when i did the spot peel. So I think that in less than a month of using it with breaks I am seeing improvements in darkness under my eyes and fine linesHelpful79 found this helpful