collagen (collagen) is a high-molecular protein, filamentous collagen fibers can keep the skin elastic. It exists in human skin, bones, teeth, tendons and other parts, and its main physiological function is as a bonding substance for connective tissue. In terms of skin, it forms a mesh support structure with elastic fibers to provide stable and strong support of the dermis layer.

　　 Collagen is an important component of human connective tissue. Collagen with active and biological functions can actively participate in the migration, differentiation and proliferation of cells. It has connection and nutritional functions, as well as support and protection. .

　　 In human skin, the collagen content is as high as 71.9%, maintaining the elasticity and toughness of human skin. The lack of collagen in the human skin will cause the collagen fibers to crosslink and solidify, and the intercellular mucopolysaccharide will decrease, and the human skin will age and lose its elasticity, wrinkles, brown spots, yellowing, dryness, roughness, itching, and aging Wait.

　　Research shows that the reason why collagen has an irreplaceable position in the field of beauty and skin care is because it is a transparent substance composed of three spiral fibers, which is more important than DNA molecules. The more magical "triple helix structure" of the double helix structure can strongly lock the water molecules.

　　 In addition, collagen also contains a lot of amino acids, which are all natural moisturizing factor ingredients.

　　 Collagen-rich foods mainly include pork skin, pig''s trotters, beef hooves, beef tendons, chicken wings, etc. At the same time, you should also eat more citrus, carrots, eggs, beans, etc.