This is a fantastic Retinyl Propionate solution. All topical Retinoid products should only be worn in the evening. Recommended usage is 1 time the first week. Layer a non-pore clogging moisturizer on top. Week 2, increase usage to 2 times per week separated by a day or two. Slowly increase usage each week until you find your tolerance, which will be when you are not flaky with use. Some can only use 1-2 x per week, some can use nightly. This is great for non-inflamed acne and anyone concerned with aging skin.
We recommend using the Mandelic Serum before this strength unless you have already used a prescription retinol in the recent past.
You must wear a Sunscreen of SPF 30 or higher each morning when using a topical Retinoid.