Chondroitin 4-sulfate sodium salt is widely used in the pharmaceutical and nutraceutical industries for its potential to support joint health. It is a key ingredient in dietary supplements aimed at alleviating symptoms of osteoarthritis, as it helps maintain cartilage elasticity and reduce inflammation in joints. Additionally, it is utilized in research studies to explore its role in tissue engineering and regenerative medicine, particularly in developing biomaterials for cartilage repair. In cosmetics, it is incorporated into skincare products for its hydrating and skin-soothing properties. Its ability to retain moisture makes it beneficial in formulations designed to improve skin texture and elasticity.