It's a secret after all...Peroxide is a liquid and Black Label is a powder. No peroxide in Black Label.
Peroxide is what makes Unchained brighten and remove pet stains. It's better as a liquid.
Pure 02 is a powder, that might be in Black Label. Powder is much safer to use than the liquid, but not as effective.
I'm wrong a lot, so Rob will have to answer, what is in Black Label.