Lightners for your hair

I've read some articles containing information on lightning your hair with Lemon or Camille Tea.
You should add pure lemon on your hair (or really strong camille tea) and it would light up your hair. Leave it in for an half hour and rinse after.

Now I'm a bit sceptic for he lemon juice, as I found some articles telling this really damages the hair. So I haven't tried it myself, I have dark hair so I'm scared it will make my bleached hair orange;

Does anybody ever tried this? Results? Was your hair damaged??