To lighten the red marks that appear after scabbing, you should usually do a good job of skin protection, you can use scar removal cream, hydroquinone cream, etc. to relieve, and in severe cases, you can also undergo laser treatment and so on. The phenomenon of red marks will appear after the scabs fall off, this is normal, usually with the passage of time will subside on its own. Normally, you should pay attention to the sun protection of the skin, which can slow down the formation of melanin in the skin. The use of scar removal creams such as silicone gel can alleviate pigmentation and prevent scar proliferation. In addition, you can use hydroquinone cream, which has the effect of lightening pigmentation. If the red marks do not fade for a long time, you can also undergo some physical treatments such as laser treatment, intense pulsed light, etc. to remove the pigmentation. If there are abnormalities in the skin after scabbing, you should go to the hospital for examination in time, and follow the doctor’s instructions when using the above medications.