In the past, collagen was extracted from mammals (bovine, pig, chicken, etc.), which easily left the bacteria and endangered human health. The study found that fish scales are also rich in collagen, and deep sea fish scales are not polluted. The fish scale collagen peptide is most easily absorbed by the body, supplements the lost collagen, has the function of reorganizing the skin fibrous structure, promoting cell metabolism and repairing tissues.

The fish scale collagen peptide extraction resin provided by Suzhou Bojie Resin Technology Co., Ltd. () can effectively extract collagen peptides from fish scales, has large adsorption capacity, high adsorption efficiency, is not affected by the presence of inorganic substances, and desorbs. The conditions are mild, the regeneration is simple, and it can be regenerated with ethanol. The use period is long, no secondary pollution will occur, and it has good economic benefits and does not pollute the environment.