How long should the Hydrating Blonde Shampoo & Conditioner be left in before rinsing? <br>For best results, leave the Hydrating Blonde Shampoo in for 2-5 minutes to allow the pigments to neutralise brassiness. Leave the Conditioner in for around 2-3 minutes to hydrate and nourish your hair. <br><br>Should I use the Hydrating Blonde every hair wash day? <br>This depends on several factors. How bright do you like your blonde to be? How porous is your hair? We'll leave the answer up to you, as it will depend on personal preference. We recommend using the duo during every second wash, then increasing or decreasing usage depending on results. <br><br>Are the toning ingredients used in the Hydrating Blonde Shampoo and Conditioner natural? <br>No, we use synthetic colourants. Why? Natural dyes are not commonly used in haircare because many natural pigments are unstable or not permitted to be used in cosmetics under certain regulations. However, the two pigments we use are approved for cosmetic use, safe at the concentration that we use and are gentle on sensitive scalps.