Collagen is essential for beautiful skin, hair, and nails as well as healthy bones and joints. But starting at age 21, collagen diminishes 1% per year. By age 30, the signs become visible. For years, scientists searched for a method to give the human body the ability to boost and protect its own collagen. But it took Biosil's landmark discovery of ch-OSA® to make this two-in-one effect a reality.† Its capacity to boost new collagen with your own DNA fingerprint while also protecting your existing collagen, makes ch-OSA® a genuine, scientific breakthrough. Biosil® is vegan & GMO-free.