Some Cautions: ALWAYS use an SPF on the area you just used AHA’s on. Skin does become more sensitive while using AHA’s or any acids. Your skin is more prone to getting sunburned, so we ALWAYS recommend using an SPF following using this product. Sensitive Skin: Even though this is gentle enough to use every day, some skin is more sensitive than others, and we recommended that you start twice a week gradually building up to everyday. If redness or irritation occurs, we suggest to stop using the product, or to ease up on how often it is used. No Added Fragrances: With such a potent level of AHA’s in the formula, we stay away from using fragrance to help minimize the chances of irritation. Dermatology & Allergy tested. While we strive to maintain accurate ingredient information, the ingredient list may be subject to change. We recommend checking the ingredient list on the product packaging for the most current details.