Chitosan is the only natural active polysaccharide with cations in nature, which has good adsorption, film forming, fiber forming, moisture absorption, and moisturizing properties.　

Phospholipids are important components of biomembranes, which can be divided into Glycerophospholipid and Sphingomyelin. 　

Glucosamine sulfate is a substance synthesized by human body itself, a traditional Chinese medicine nutrient produced by chondrocytes, and an important component representing healthy cartilage.