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Ultraviolet radiation activation of melanin, the melasma appear. And the biggest causes of the melasma should in the three steps to find:

First, ultraviolet, or age growth caused hormone changes and will be activated tyrosinase;

Second, tyrosinase stimulate melanin cells produce melanin;

Third, age growth made metabolism slower, melanin easy aqqradation, absorbed by skin cells, the formation of melasma.

In addition to genetic factors, the biggest causes of melasma that age! Remove melasma also can not just stay in the stage of form melasma, should full role in three steps, we can really farewell to melasma!

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