At night, apply a thin layer on desired areas of treatment or on full face. For the eye area, apply sparingly to the entire eye area. Avoid direct contact with eye. Fore retinol beginners: apply double play twice a week for around 3 to 4 weeks to allow skin to acclimate. Increase usage gradually to nightly use. *Sunscreen Alert: Use sunscreen during use, wear protective clothing, and limit sun exposure while using this product and for a week after stopping use.