Collagen is an important raw material for repairing damaged tissues. When the collagen in the dermis is oxidized and broken, the supporting effect on the epidermis disappears, resulting in uneven collapse and wrinkles. Now, as an effective cosmetic raw material, small molecular collagen can moisturize the skin and give it a smooth feeling, so it is called "bone in the bone, skin in the skin, and meat in the meat", which can be said to be the strong backing of the dermis and its effect on the skin is self-evident.

Collagen added in skin care cosmetics has good compatibility with other raw materials and can effectively repair damaged skin. After oral administration of pure collagen 1 month, the skin becomes fine and smooth, fine wrinkles are well stretched, and the skin color turns white. Bone soup and oral collagen supplements are both collagen foods. But a large part of it will be filtered out by the human digestive system, and the amount that can really reach the skin and play a role is very limited.

Collagen can also be used to fill deep wrinkles, defects caused by skin damage (such as acne scars) and repair facial defects, with immediate results. However, collagen injected into the skin will be gradually absorbed by the human body, so its efficacy can only last for six months to one year, and a few people may have side effects such as allergies and infections.