Shake well. After cleansing, apply an even layer onto face with either your palms or a cotton pad. Do not rinse. Start with a few applications a week and increase use, if tolerable. Use no more than once a day. Follow with serums and moisturizer. Slight tingling or redness upon application may occur. Patch test prior to use is advised. Sunburn Alert: Contains an AHA that may increase skin’s sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear protective clothing, and limit sun exposure while using this product and for a week afterwards.