I used esalon before, and I liked the way it was packaged and you can customize it. If you need help you can call. They will adjust color to your needs. I ended up having greenish roots, and they fixed it somehow. You can skip shipments, and if you have long hair they'll send you an extra bottle at no charge. The color was wonderful, and gray was covered. I just recently switched to Demi permanent color, it lasts just as long as permanent color, but is way less damaging. I like it a lot better, hair is shiny and gray is covered, even though it says it only blends the gray. I use the one n only Demi and I'd never go back to permanent color.