肤色问题主要根源在于黑色素过多，皮肤缺水和更新减慢。
Skin tone concern is mainly caused by excess melanin, dehydration and slow renewal.
这听起来很矛盾，因为这一假设背后的理念是，树叶在秋天产生的红色素是用于保护叶绿素这种吸收光的化学物质，以免它吸收过多的光。
It sounds paradoxical, because the idea behind this hypothesis is that the red pigment is made in autumn leaves to protect chlorophyll, the light-absorbing chemical, from too much light.
而对于长时间频繁遭受太阳暴晒的皮肤，黑色素便会“集群分布”或产生过多，此时就显示出老人斑。
On areas of the skin that have years of frequent and prolonged sun exposure, age spots appear when melanin becomes "clumped" or is produced in particularly high concentrations.
经过多年试验，研究者已在治疗黑色素瘤，肺癌和血癌方面取得进展。
After decades of trying, researchers have made progress against melanoma, lung cancer and leukaemia.
在年轻的狗过多的皮肤色素沉着。
很幸运，我们不用过多地关注色素。
Fortunately, we won't have to think about pigment for very long.
功效：帮助表皮层的色素分解与排出，控制过多麦拉宁色素形成，由内而外回复肌肤的妖嫩、白皙。
Efficiency: Assist to decompose and remove melanin from epidermis, inhibit the formulation of surplus melanin, and recover skin tender and white state from within.
结论：某些中药可用于药品或化妆品中治疗色素沉着过多症。
CONCLUSION: Some of the crude drugs could be used in medicines or cosmetics for the treatment of hyperpigmentation.
她解释说晒黑是皮肤的一种防御反应，皮肤为了保护自己免受过多的有害的紫外线的照射产生更多的黑色素。
A suntan, she explained, was a defensive skin reaction to produce more of the pigment melanin to protect itself from too much harmful ultraviolet (UV) radiation.
她解释说晒黑是皮肤的一种防御反应，皮肤为了保护自己免受过多的有害的紫外线的照射产生更多的黑色素。
A suntan, she explained, was a defensive skin reaction to produce more of the pigment melanin to protect itself from too much harmful ultraviolet (UV) radiation.
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