
I bought this because I was looking for a good bleach and it's always difficult to get yellow out of old white clothes. As far as color theory goes, blue is the opposite of yellow, so it's clear that blue would be ideal. I first tried it on white brand new clothes and it gave them a very slight blue tint. In color theory, a "super white" color usually has a slight bluish cast. So it worked really well. I'm a med student and we love it when our clothes are super super white and it works. I tried nucleating this stuff onto an old white coat to get rid of the yellow discoloration. And it worked, but the color that comes out isn't bright white. Think about it, the yellow makes it a bit darker, and here's the blue. The color that comes out is something like white with some grey. Is it better than yellow? Yes of course. But I'm still looking for something to make clothes look bright white right now. I'm open to suggestions!

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