Why do people do crazy things like that. It seems that if it's the same Hydroquinone that we use in our developers it can't be good for you. I'm certainly going to let my brown spots live on with no bleaching that's for sure. Beside, I would be to embarrassed to go to the beach like that.
Back to staining..............I've tried to add different amounts of Hydroquinone to my home-brewed Perceptol with a 1+3 dilution and came back with negatives that had no stain that I could see. Maybe to much Sodium Sulfite? I have 1lb of it on the shelf and I know for sure that I'll never use it in my lifetime. John W