Protect and condition during the lightening and colouring process with the Jerome Russell B Blonde Maximum Highlighting Kit. The permanent hair dye is formulated with avocado oil for enhanced hydration and shine, and lifts hair by up to 9 shades. The hair highlighting kit works on light to dark brown hair, producing professional colour shades depending on your natural hair colour. For external use only. Always perform a strand test 48 hours before full use. Always read the label.