The pigmentation of the skin may be the result of melanin biosynthesis in melanocytes, or simply a reaction between skin proteins and specific substances of the stratum corneum.
I artificial colors are intended to cover the spots. Hence we have:
bronzers : are made of synthetic additives and dyes certified that color the skin without damage. We also use natural dyes such as walnut juice.
bronzers A well known is the ' henna, which has a non-permanent color. One example is the naphthoquinone , reddish brown.
Extenders : organic substances are capable of reacting with proteins as the amino acid arginine Couch corneum, forming complex chemically defined. For example, the melanoidina . The color is brown pigment, gives effect similar to the natural production of melanin. The reaction is irreversible, the color is resistant to washing and lasts for a few days until the peeling of the stratum corneum.
dyes are very mild, non-toxic, and sometimes contain protection against the sun's rays.
They consist of a molecule called CHETOLO (alcohol + ketone): dihydroxyacetone, glyceraldehyde , diidrossisuccinaldeide .
TANNING PLUS: are dietary supplements containing carotenoids additives and dyes. They have no cosmetic use. Give the skin an orange color.
TANNING MAGNIFIER : they are of tanning enhancers and enhancers of melanin.
, accelerating the formation of melanin, increasing the substrate tyrosine available for the action of tyrosinase, an enzyme essential for melanogenesis .
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