Apply once a day after showering in the evening. We recommend starting with twice weekly application and then gradually increasing the frequency. You can intensify the application, especially on thicker, dry areas such as elbows or feet, to promote cell renewal in these areas.Tips: If you are over 50, we recommend the use of Perfect Body 30: composed of 30% glycolic acid, it is more suitable for mature and thicker skin. Cautions: Perfect Body 15 contains Glycolic Acid, be sure to use a sunscreen such as Sunlight Screen 50+ every day. Wait 24 hours after shaving or waxing. Stop using the product several days before using self-tanners. Should not be used just before strong exposure to the sun (beach, mountain, prolonged outdoor activities, etc.). Avoid contact with eyes, otherwise rinse thoroughly with water. In case of discomfort (irritation, itching, redness, etc.), use less frequently. Not suitable for sensitive, damaged, irritated or problem skin. Not recommended for pregnant or breastfeeding women.