Oh gosh! That's the brand that destroyed my hair! I used Extra Light blonde since it's a golden version of my hair color, and now it's all breaking off and being weird. Maybe try it just on the white hairs. I left it in for 15 minutes, and I have very fine easily damaged hair. I also had heat blow dried and straightened it about once per week and used silicones which hid the damage until I stopped. If you have reddish hair, henna is supposed to be good for that, and maybe just putting it on the white hairs if it bothers you.