The main component of the collagen dressing is collagen, which is usually used to repair superficial skin and soft tissue. Therefore, topical collagen dressings are usually used as an adjunct to facial or skin surgery, most commonly for the repair of wounds after laser or photorefractive surgery. In addition, it is also good for facial acne, folliculitis or minor facial surgery to promote local wound repair, and is widely used in clinical practice. However, if there is collagen allergy or serious infection in the wound, it should not be used temporarily.