Novavis Novavis 4N Brown 135Ml is a hair colouring product. This chestnut coloured hair dye is designed to provide full coverage of grey hair and long lasting colour. It is used to change hair colour, either to cover grey hair, to highlight or to completely change the shade of the hair. It provides a natural and shiny result, leaving hair soft and silky. It is easy to apply and offers long lasting colour.