After cleansing thoroughly with Soft Cleanser, apply in the evening, a thin layer to the face and neck. Massage gently to help absorption. For best results, use Daylight C20 as day cream.Tips: Use the Stim Renew treatment adapted to your age and skin type. Opting for a higher dose of care will not be more effective and risks sensitizing your skin.Cautions: Stim Renew contains Glycolic Acid, be sure to use a sunscreen such as Sunlight Screen 50+ every day. A slight discomfort may be experienced on sensitive or unaccustomed skin due to the exfoliation and the penetration of the active ingredients. If this happens, space out the applications at the beginning of the treatment and then gradually increase frequency until daily use. Rinse off immediately in the event of discomfort (itching, intense tingling, sensation of heat, etc.). Avoid contact with eyes, otherwise rinse thoroughly with water. Not suitable for sensitive, damaged, irritated or problem skin. Not recommended for pregnant or breastfeeding women.