Can someone remind me of the ratios for covering grey hair depending on the percentage of grey? I cant find it anywhere and it's slipped my mind! Lol got a client with 100% white hair and wants 9gb lowlights, trying the think of how much nn shade I need, I know I'll need more than equal amounts. Having a blonde moment! Lol x
I used this ratio -
30% grey - 15mls N/NN 25mls fashion tone
50% grey 20mls N/NN 20mls fashion tone
70% + grey 25mls N/NN 15mls fashion tone