Zelens Power C Vitamin C Concentrate is a high-potency product enriched with 20% highly stable vitamin C ester. This silky collagen-boosting and brightening treatment promotes skin's firmness and elasticity, reduces the appearance of fine lines and wrinkles, and evens skin tone for a visibly radiant and youthful complexion. Dermatologist tested and suitable for all skin types, it's designed for daily, morning and evening use. Apply a few pumps to the face, neck, and décolleté. Follow with the next step in your skincare routine.