Obagi Professional C Serum 20% is a potent skincare solution formulated with the highest concentration of Vitamin C (L-ascorbic acid) for mature skin types. This advanced serum works diligently to combat signs of aging, including fine lines and wrinkles, while also addressing hyperpigmentation and dark spots to promote a radiant, even skin tone. Its powerful antioxidant properties protect the skin from damaging free radicals generated by UV exposure, helping to preserve a youthful appearance. Fortified with hyaluronic acid, it enhances skin-firming effects by binding to moisture, preventing dryness, and contributing to a plump, revitalized complexion. The serum also plays a vital role in boosting collagen production, crucial for maintaining skin firmness and elasticity, leading to improved skin plumpness and a healthy, youthful glow. Suitable for normal to oily skin, this serum is designed for topical application and can be effectively combined with other Obagi skincare products for maximum results.