For best results to achieve 7R (Copper Blonde) on uncolored hair, apply on 7N - Blonde color hair. If applied on 4N, 5N, 6N, the color result will be dark copper. If applied on 8N, 9N, the color will be light copper blonde. The same rules will apply for 7D 8D and 7M. (7C, - Ash color, will be very cold and flat - the Ash series is used to neutralise unwanted gold and red). To cover grey hair with 7R it is essential to mix appropriate quantity of 7N Blonde.
See instruction on leaflet inside the color box or refer to 7N Blonde.