This advanced vitamin c-20 serum contains 20% stabilized l-ascorbic acid. reduces the visible signs of aging, fine lines and wrinkle, age spots and sagging skin, improves tone and elasticity for a more youthful texture. for all skin types. smoothes out features, softens fine lines improving skin texture and refines facial contours effectively minimizes the appearance of fine line enhances skin s youthful appearance in within a weekmethod of useapply 4-5 drops to cleansed face and neck. avoid direct contact with eyes. use morning and/or evening. use spf 15 or greater sunscreen to prevent any increase in sun sensitivity. tighten cap securely following each use. store in cool, dark place.