Details: Amino acids are known to deeply penetrate into the hair fibre. Due to their small molecular size they reach even more narrow fibre elements in the cortex of the hair. The amino acids we are using in IGORA Color10 are called Arginin & Glycin. These work like a transport carrier helping to pull the colour pigments into the hair in less time. The amino acids do have a caring element on their own and due to the short processing time the colouring process is more gentle.