Eat more foods containing collagen. Collagen: accounts for 1/3 of the body's protein, forms connective tissue, and forms the body's skeleton. Such as bones, blood vessels, ligaments, nails, etc., determine the elasticity of the skin and help wounds recover without leaving scars. Protect the brain (a large part of the brain cells are collagen cells, and form a blood-brain barrier to protect the brain)

Pig's trotters (pig skin), kelp, white fungus, soft-shell turtle, fish skin, isinglass, Tendons, etc.

Banana, taro, fish, lotus root, bone soup, pig's trotters, white fungus, kelp, pig tail, soft-shell turtle, bird's nest

Chicken wings, chicken skin, fish skin and cartilage, etc. All foods contain collagen.

There is also yam, which is rich in collagen