My hair is a natural ash blond but I have a lot of gray, too. My hairdresser does a foil so she can do more in the gray areas and less in the back, so it blends well, not much demarkation. I need this done about every 8 weeks, but I like it to be fresh before social events, so sometimes it's only 5 weeks. My natural hair color is kind of a grayish blond anyway so in certain lighting it's hard to see the gray but bright sunshine much more obvious. My sister's hair is kind of Iike mine. She uses Root Rescue product between her appointments. Her hair looks great. I may try it.