L’Oréal Professionnel Smartbond, 500 ml, Hair Dye Developers for Women, The L’Oréal Professionnel Smartbond activating emulsion is an essential tool for permanent and semi-permanent hair dyes. Characteristics: the product is gentle on hair extends colour intensity the result is a colour full of shine How to use: Mix in the correct ratio with the hair dye. Avoid contact with eyes. If the product comes into contact with your eyes, rinse them immediately with plenty of water. Keep out of the reach of children. Use suitable protective gloves. Follow the instructions included. Only for professional use.