What's your situation now? In the past, acne left many acne marks and pits, and now it is still growing, and there are many previous acne marks and pits on the face. If it is the former, it is recommended to do pulsed light. Pulsed light is the most effective laser treatment for acne marks and pits. PRP serum therapy is a new skin beauty method, but it is mainly used for wrinkle removal. If you are still suffering from acne, I suggest you treat your acne first, such as blue light, and pay more attention to your diet.