Scars on the legs may be caused by trauma, etc. If the scars are just formed, you can apply ointment to lighten the scars, and if they are old scars, you need to use ointment and laser methods of joint treatment. 1. Freshly formed scars: There are many medications available on the market to lighten scars, such as sodium heparin compound cream, humanoid collagen repair silicone gel, etc. These creams can soften hyperplastic scars, promote fibroblasts to proliferate and rearrange, so that the skin returns to its normal structure. A few patients may experience side effects such as skin pain and itching during the use of medication, and allergic patients should be cautious. 2. Old scars: The effect of single use of ointment for old scars is not very obvious, you can use laser method to remove scars first, and then use the above ointment to apply treatment. Commonly used laser methods include dye laser, intense pulsed laser and so on. Patients usually need to protect the scar site from extrusion, scratching and other stimuli, frequent massage, hot compresses on the scar site, keep the local skin clean and hygienic, if necessary, please go to the hospital for medical treatment, follow the doctor’s instructions to remove scars.