Small scars that have just formed can be lightened by medication, and scars that have formed for a long time and are relatively deep can be considered to be lightened by laser cosmetic surgery or skin resurfacing. 1. Drugs: when the scar is just formed and the scar area is relatively small and the scar is not deep, you can consider using drugs to lighten the scar, such as recombinant human epidermal growth factor gel, sodium heparin gel, silicone gel and so on. Long-term persistent use of ointment, scars can slowly fade. The use of medication should be guided by a professional doctor. 2. Laser cosmetic technology: scars formed for a long time can be considered to fade with laser cosmetic technology, through different wavelengths of laser, the scar tissue for epidermal reconstruction, thereby stimulating the regeneration of collagen tissue, to achieve the effect of slowly fade scars, such as fractional laser, gold microneedle, and so on. 3. Skin resurfacing: when the scar is deeper and hyperplasia occurs, skin resurfacing can be considered to improve the scar, using mechanical abrasion to achieve the effect of fading scars. When you need to lighten scars, it is recommended to go to a regular hospital, consult a professional doctor, follow the doctor’s advice, do not self-medication.