Black marks left behind by scabbing wounds are eliminated more quickly by applying topical medication or laser treatment. When the black marks are not too serious, they can gradually disappear over time even without treatment. To speed up the process, you can apply vitamin medication for antioxidant or glycolic acid plus retinoic acid, which can promote the skin’s own metabolic renewal to play a role in lightening hyperpigmentation, and the elimination of black marks is faster. When the color of the black mark is deeper, the effect of drug treatment is not obvious, the effect of laser therapy is more significant, which through the photothermal effect to dissolve the skin surface pigmentation, promote the regeneration of collagen, the black mark elimination speed is faster. It should be noted that, on weekdays, we should do a good job of sun protection, to avoid too long exposure to ultraviolet radiation, and eat less spicy and stimulating food.