I've lost mine, but due to me relocating to the Midwest from the LA area. I've asked him to provide me his 'recipe' for coloring my hair & will call different salons to see who carries the same brand/has a good reputation. He also suggested calling the concierge at an upscale hotel (there aren't that many of them!) to see who they recommend. When possible, although it won't always be, I'll try to coordinate needed LA biz trips w/ seeing him/having him do my hair again. But I will need to find a local source.
Cheers.