not yet - i'm in australia and its winter here so there is no UV to be had - but i think i might be able to give it a go today.the other problem is, the recipe says you need 10 - 15% strength, but i looked everywhere and could only find 6% strength so...its not a GREAT trial of how it works, but i suppose its better than nothing.
As far as i know, you can find higher concentration peroxide in hair dresser shops. It is used for changing one`s hair shade to a lighter one.