Collagen is main protein in human body, account for 30% of protein in human body, more than 70% of collagen in skin, and over 80% is collagen in dermis. Therefore, it is a kind of structural protein in extracellular matrix in living organisms, and play an important role in cell reproduction, as well as closely related to cell differentiation and cell aging.

Dr. Brandt, the father of collagen in the world: All causes of aging come from the loss of collagen.

After the age of 20, the skin thickness decreased by 7% in every ten years, and women loss 30% of their collagen within five years after menopause, then loss 1.13% year by year. 

With the increase of age, the reduction of collagen and the decline of fibroblast function are the keys to skin aging. The another important reason is the light aging, mainly refers to repeated exposure of sunlight and ultraviolet rays in long term.

Therefore, apply for more sunscreen and take umbrella are the important steps to care for our skin and delay aging. Once collagen loss, which means the net that support the skin is collapse, and hyaluronic acid and elastin protein will start to decrease. So, we can see that how important collagen to skin.

When we mentioned about the need to supplement collagen, eating trotters and fish glue will come out in our mind. So is it useful to eat them？The answer is useful, but not obvious.

Why? Although trotters contain collagen, most of them are macro-molecular, and it is hard to be absorbed by human body.So as the reason of fish glue.

For collagen is not easily absorb through food, people began to extract collagen peptides from animal protein through protease degradation treatment technology. The molecular weight of collagen peptide is smaller than collagen, and is easier to absorb.