Tyrosin

Tyrosine (from the Greek tyros = cheese) is a non-essential amino acid that humans can synthesize completely from phenylalanine. An enzyme defect in phenylalanine hydroxylase leads to phenylketonuria and thus to a lack of L-tyrosine.tyrosine is significantly involved in the formation of melanin, and tyrosine is also a precursor of neurotransmitters such as dopamine and noradrenaline, as well as thyroxine, triiodothyronine and melanin.

L-tyrosine is substituted for phenylkentonuria. In SCIT, thyroxine is also used as a depot carrier.

In cosmetics, tyrosine (INCI) is used in skin and hair care products. It has an antistatic effect (reduces static charges by neutralizing the electrical charge on the surface, for example in hair), makes the hair easy to comb, smooth, soft and shiny and gives it volume; tyrosine also cares for the skin.