“黑”从哪里来大概人人都有这样一个概念:黑色素,是令肌肤形成色斑的源头。然而,真相却不仅如此,真正该让人如临大敌、严阵以待的却是由原生色素母细胞分泌的麦拉宁色素(the melanin)。想象一下,这是一片广阔繁茂的森林。骄阳烈日,森林中的树叶全部变色,以保护在层层叠叠树叶下的生灵。每每乌云密布或细雨微醺,树叶义会马上变回本色。这屿神奇的会变色的树叶就是麦拉宁色素,一旦遇到紫外线的照射,它就会启动保护机制来防止肌肤受到伤害,而一旦离开紫外线的环境,麦拉宁色素的制造也会跟着停止。 “Black ” Whereabouts About Everyone has such a concept: melanin, is the source of the formation of stains on the skin. However, the truth is more than that. The real enemy that should be looked down upon is the melanin secreted by native pigmentary cells. Imagine this is a vast and lush forest. In the hot sun, the leaves in the forest are all discolored to protect the creatures under the foliage. Whenever the clouds are cloudy or meager, leaves will immediately change back to true colors. This magical discolored leaf is a melanin pigment, which, in the event of UV exposure, initiates a protective mechanism to prevent skin damage, and once left UV, the manufacture of melanin pigment will stop .