The biggest difference between peptide collagen and ordinary collagen lies in the level of the molecular weight. As far as average collagen is concerned, its molecular weight ranges from 2,800 Dalton to tens of thousands, even to hundred thousands of Dalton, while the molecular weight of collagen peptide, hydrolysate of the collagen, can be easily controlled between the range of 1,500-3,000 Dalton or so. The beauty world swept by such a trend, and women pursuing beauty have begun to choose beauty foods to strengthen and consolidate their victory in beauty.
Beauty foods become more and more popular in the domestic market recently, and they are pursued by numerous businessmen and consumers because they correspond to traditional Chinese concept of regimen.
Collagen is located in the dermal layer of skin possessing the utility of supporting the skin, and keeping the skin elastic. In skincare, more and more people switch from the stage of applying external modifications to that of taking in internal nutrition. As an important element in the basal layer skin, collagen protein maintains the elasticity and vitality of the skin. So from this point of view, collagen peptide has a higher absorption rate than collagen. As a kind of beauty food, the most attractive features of collagen peptide are undoubtedly the function of anti-aging and powerful moisture retention. Also for just this reason, beauty food supplementing collagen has become very popular, holding a firm position among all kinds of similar foods. Compared with other structures in the skin, collagen is more hydrophilic. As its structure contains a lot of hydrophilic groups like the amino, hydroxyl and carboxyl group, together with the amino acid within itself, such as glycine, alanine, aspartic acid, collagen peptide can enter the dermal layer to form moisturizing factors. The parlance that the collagen has a strong hydrating function is based on such an understanding. For the human body, the molecular weight of the collagen with the strongest absorption activity is between 1,000 and 3,000 Dalton. The collagen with too high a molecular weight has to be decomposed into polypeptides first before they can be absorbed by the human body.