Collagen is one of protein which consists in our derma and bone. About 1/3 of the protein in our physique is collagen.
It is said that collagen in our physique gradually decreases with age over 20.
In our body, collagen works as a adhesive to amalgamate one corpuscle with another, and transfers water, nutrients, etc.
In our skin, collagen exists a lot in dermis, and spreads like a net. Collagen works to advance the derma fitness.
Collagen promotes derma metabolisms, and keeps the derma chargeless from dullness.