Oxidation Dyes for Hair Colouring are low molecular weight materials that pass through the cuticle into the hair shaft where they oxidise and combine to generate a larger coloured molecule, which remains inside the hair structure. The Oxidation Dyes are suitable for permanent and semi-permanent hair colorants and have ability to cover grey and give long lasting results. The Oxidation Dyes are offered in wide range of colours. The Oxidation Dyes for Hair Colouring have accurate composition and is safe to use.