Patient: Description (time of onset, main symptoms, hospital visited, etc.): Female patient, 20 years old, had acne on her cheeks twice, but now the acne has basically disappeared, but there are red acne marks and serious depressed scars on her face, which are more obvious when viewed up close. Can I use medication or do I need a laser? Answer: If the acne does not recur, you can use injections to fill in the scar, and then consider microdermabrasion, basically you can recover. Patient: Doctor, what is the material of the injectable filler? Will it be absorbed by the skin? Is it better to do filler, grinding or laser in my case? Answer: Hyaluronic acid, also known as hyaluronic acid, is a polysaccharide. Hyaluronic acid is commonly found in bones, cartilage, joint lubricating fluid, eyes and other tissues, and is an important component of the skin tissue structure. 100% non-animal source modified sodium hyaluronate, which is very similar to human hyaluronic acid, can be completely combined with human tissue after injection, without rejection and allergic reactions. It is easy to inject through non-surgical method, and it is done instantly, safe, non-invasive, painless and natural. It not only repairs wrinkles on the face, but also adds moisture and lubricates the skin, giving your skin elasticity and luster and creating an ideal contour. Hyaluronic acid injections include: hyaluronic acid injections for scar filling; hyaluronic acid injections for nasolabial folds; hyaluronic acid injections for wrinkle reduction; hyaluronic acid injections for eyebrow arch enhancement; hyaluronic acid injections for nose augmentation; hyaluronic acid injections for chin augmentation; hyaluronic acid injections for earlobe augmentation. Hyaluronic acid 2 will gradually degrade in the human body, and the treatment effect will gradually disappear with the degradation of Hyaluronic acid 2. Patients who wish to maintain the filler effect can receive injections again after the treatment effect wears off. If the acne does not recur, the scar can be filled in with injectable fillers and then microdermabrasion can be considered for basic recovery.