Doctor's Best Hyaluronic Acid with Chondroitin Sulfate supports healthy joint structure and youthful skin.* Major visible signs of skin and joint aging are a result of collagen and hyaluronic acid degradation in our tissue. Doctor's Best developed a formula that includes BioCell Collagen, a science-based, clinically-tested hydrolyzed collagen that promotes youthful-looking skin and healthy joints. Studies have proven that hydrolyzed collagen provides a significant advantage in bioavailability than its non-hydrolyzed collagen counterparts. This allows the collagen to more easily and efficiently support your joint health.* BioCell Collagen offers a unique composition that has undergone human clinical trials and proven its efficacy. BioCell leverages their patented Bio-Optimization process, which contributes to its remarkable bioavailability. Bioavailability allows our bodies to absorb nutrients faster.*