Stellar C is rich in vitamin C (from a mixture of ascorbic acid and acerola fruit) and plant bioflavonoids (hesperidin, rutin, quercetin and mixed citrus bioflavonoids), known for their immunoprotective properties. In addition to supporting healthy immune function, these nutrients have been used historically for applications such as maintaining healthy veins, capillaries, skin, hair and nails by supporting normal collagen production and repair.