Henna is good and I think now you can get different shades. But, if you really don't want to dye your hair, don't. As we age our colour fades and our skin-tone does also. Sometimes very dyed hair can look more ageing than going natural. I haven't dyed my hair for many years, and now large stripes of it are very white. I often get asked who does my colour, so I'm guessing it doesn't look too bad. Anyway, I'm not too fussed on public opinion, but not dyeing has saved me quite a lot of money and stress. Hated touching up those roots.