Collagen 9MX99 Kit - Collagen + Collagen 21 + Collagen Pure + Calcium+DTake this super offer Collagen, 9 months treatment. It includes a bottle of pure Collagen 300 tablets, a bottle of Collagen Complex 120 tablets plus a bottle of 120 tablets Collagen 21 Collagen is the main component for connecting tissue is the most abundant protein, constituting between 25% and 35% protein of the human body. Collagen is found mainly in fibrous tissues such as tendons, ligaments and skin. It is also abundant in cornea, cartilage,