The red marks after falling off the scab are redder due to the newly generated skin or scar tissue from the scab, which has a richer local blood flow. Generally do not need special treatment, after a period of time will be eliminated by itself. Scabs are formed as a result of skin breakage after trauma and drying of local tissue fluid oozing out, which has the function of protecting the broken skin. If the scab is not peeled off when forced to tear off, due to the scab underneath is some relatively young, fresh granulation tissue, and local blood flow is relatively rich, so it looks more red. And if the skin under the scab is completely healed, the scab will fall off by itself and the new skin or scar is thinner, rich in blood flow and reddish in color, which does not need special treatment and the color will gradually recover. During this period, it is best to avoid sun exposure and dry skin, you can use topical sunscreen or skin cream.