Boosts Collagen Production Skin Renewal Retinol stimulates collagen production improving skin firmness and reducing fine lines and wrinkles Fights Signs of Aging Speeds up cell turnover to reduce hyperpigmentation while smoothing out skin texture Effective Against Acne Kills P Acne bacteria addressing the root cause of breakouts acne and blemishes Lightweight and NonGreasy This serum is quickabsorbing nonsticky and suitable for all skin types including sensitive skin How to Use Apply 23 drops on a cleansed face gently pat and follow with SPF during the day or a moisturizer at night for optimal results