I tried 4 times now - I am using 3% peroxide. My hair is dark (natural, never been dyed or bleached before) and it won't work. I used peroxide with water, peroxide without water and that thingamajig with baking soda.
Before you answer, I don't care about dying my hair after or anything like that - I just want to lighten it.
I saw a lot of people lighten their hair with peroxide (as in saw them doing it). I doubt that they went through the trouble of confusing me by putting hair bleach (which contains peroxide, by the way) in a peroxide container.
@Sur La Mer - I said in the beginning "3% peroxide" I don't care much about lemon juice or stuff like that, it just lightens your hair by maybe half a shade (using the sun too)
If your normal hair color is dark then home lighteners will not work. Almost all the home lighteners such as drug store peroxide, chamomile, lemon juice and others work only if you already have blonde, dark blonde or very light brown hair that naturally lightens and bleaches out in the sun. The mixtures will not work on very dark brown, black or raven-black hair. For auburns and light to medium browns you'll get orange -maybe, and for red hair you will end up with bright orange. For dark hair it is safer and far less damaging to get it lightened in one step at a salon with rather than using a bunch of things over and over that are progressively damaging your hair more every time you use it.