I have naturally white/grey hair which began throwing brassy tones recently. Purple shampoo always grabs and gives my hair a purple sheen, but these Drop It - Toner Drops (White Blonde) are absolutely perfect. I put two tiny drops in with my weekly hair mask, mixed and left it in my hair for 10 minutes. After rinsing the treatment out, almost all of the brassy tones were gone and there is absolutely no purple hue to my hair. I truly recommend these toner drops - absolute game changer!