Collagen: a macromolecular fibrous scleroprotein, the main component of human connective tissue, is the most abundant functional protein in the human body, accounting for 30% of the human body’s total protein value. Collagen is the main protein responsible for the cohesion, elasticity and regeneration of connective tissue. It must be digested and decomposed into collagen peptides in the digestive system before it can be absorbed by the body. Collagen Tripeptide: A transparent collagen extract composed of two or more amino acids. It also has a highly bioactive form of collagen, a small peptide that can be formed by enzymatic hydrolysis of collagen. It is more easily absorbed by the body due to its extremely small molecular weight (700 Daltons).