Black Wash detergent for Dark Clothes

Has anyone used the Black Wash laundry liquid for dark clothes? Thinking about using it on some of my faded black clothes and dark denims...

I've used it. If they're already faded it's a bit late, it is meant to hold the dye better not make clothes any darker.
If you want to save your dark clothes drying them inside out in the shade prevents fade too.

I use it all the time, but it only helps to slow the fade, once they're faded it's a bit too late...

Yeah I use it on all my darks/denims and it's pretty good :) I wear heaps of black and have noticed since using the Black Wash stuff, my clothes are in a lot better condition than when I was using ordinary laundry detergent. Especially new clothes, as they've never been washed in ordinary detergent, they stay really nice and black for a lot longer.
Also, cold wash, and hanging things inside out (or indoors if they're something special that I want to keep forever and ever) really helps :)
I won't consider going back to ordinary detergent for my black clothes - every little bit helps and even though it's a bit pricey, I think it's worth it to keep my clothes darker for longer.