Synthetic melanin as a sunscreen and tanning agent

Details Synthetic melanin as a sunscreen and tanning agent Synthetic melanin as a sunscreen and tanning agent

1993-03-25

1995-01-24

Robinson, Douglas W.

Drug, bio-affecting and body treating compositions

Live skin colorant containing

424 59, 424 7803, 514415, C08G 6306

Patent

active

053841166

ABSTRACT:
A melanin that is soluble in an aqueous solution at a pH between 5 and 9 at a temperature of 0.degree. to 100.degree. C. Advantageously, the melanin is capable of being filtered through at least a 0.45 micron size filter, and has a molecular weight of greater than 10,000 kilodaltons. The melanin is useful for providing a naturally-appearing tan to mammalian skin and hair. Such melanin can be produced by combining dopachrome and an appropriate enzyme, or by incubating 5,6-dihydroxyindole-2-carboxylic acid alone or with 5,6-dihydroxyindole, or with 3-amino-tyrosine. The melanin is also useful for providing a sun-screen to mammalian skin and hair, to treat post-inflammatory hypo- and hyperpigmentation, to tint glass and plastic, to protect industrial materials against ultraviolet damage, and as a coloring agent in foodstuffs such as coffee, tea, soda, whiskey and liquors.

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