Method of preventing darkening of skin or inhibiting melanization of melenin monomer and polymerization inhibitor of biological dihydroxyindole compound

   
   

A method of preventing darkening of the skin or inhibiting melanization caused by the irradiation of the melanin monomers with long wavelength ultraviolet rays having a wavelength of 320-400 nm as well as a polymerization inhibitor of a biological dihydroxyindole compound comprising 3-O-ethyl ascorbic acid and an external skin treatment composition containing the same.

Um método de impedir escurecer-se da pele ou de inibir o melanization causado pelo irradiation dos monomers do melanin com os raios ultravioletas do wavelength longo que têm um wavelength de 320-400 nm as.well.as um inibidor da polimerização de um ácido 3-O-ethyl ascorbic compreendendo composto do dihydroxyindole biológico e de uma composição externa do tratamento da pele que contêm o mesmo.

 
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