Tried it. Didn't lighten my (natural) hair color, thank goodness. My hair looked a little glossier the first day - but I'm on day #2 and don't see a great difference. I have thin hair and it feels a little thicker; that's all I've gotten out of it that I can see.

Bought this but haven't tried it yet. I've never had any type of chemical treatment - color, perm, etc - on my hair, so we'll see how this turns out. Says it may lighten hair.