Activated charcoal acts as a dirt magnet. This means that the charcoal can attract the dirt from deep inside the pores and make the skin clean from deep inside. The skin once clean will absorb any nutrition provided to it in a much better way and thus, stay hydrated better. The charcoal scrub keeps the skin absolutely clean and this, in turn, prevents the skin from any adverse reaction or damage. The skin free from all sorts of impurities will be able to avert the dark spots a lot more and keep the skin clear from dark patches.