Posted by iHerb Customer on May 07, 2009 | Verified Purchase
If you have grey hair and want to use a golden (D) or other color outside of the N series, you have to supplement your color with an N color. The boxes say "100% grey coverage," but the inside directions say you need to add some of the N color when mixing to guarantee grey coverage. I ordered my color and was all set to start and then had to order a second box if the N series, so I was not very happy. Then, the second box took more than a week to arrive, even with priority shipping. When I finally was able to do my hair, however, I can say I was pleased with the results.