Black acne marks are usually pigmentation left after the inflammation of acne, usually it takes 3-6 months to eliminate, but the exact time varies from person to person. If you have a regular lifestyle, proper diet structure, and pay attention to skin care, you can accelerate the fading of black acne marks, and vice versa will prolong the fading time. First of all, there are many factors that affect the fading time of black pimple marks, usually should pay attention to the black pimple marks dissipation period, do not force to pick pimple or scab, because there are bacteria on the hands easily infected wounds, and improper strength will even damage the skin, easy to leave a permanent scar. Secondly, when the face left black acne marks, more attention should be paid to skin cleaning, in the case of acne marks try to use cleanser cleanser to prevent dust and germs into the pores to affect the speed of fading. In addition, you also need to do a good job of sunscreen isolation, proper rubbing sunscreen milk, to prevent ultraviolet radiation, reduce the melanin in the skin, and thus speed up the disappearance of black acne marks. Finally, proper hydration and vitamins can speed up cellular metabolism, which in turn helps pigment discharge. The vitamin C and vitamin E in vitamins have certain antioxidant properties, so they can also accelerate the elimination of black acne marks.