Darks wash - powder or liquid?

[EmGee]

For some reason I use powder for whites and liquid for colours. I've no idea why and have just used the last of the liquid. Can I just use powder for every wash - whites and darks??

Yes you can, powder if used alot will fade colours faster than a liquid detergent over time but not in just one wash. Powders have brightners in them liquids don't, that's all.

I've recently started using powder instead of liquitabs for everything & the difference in cleaning makes everything else redundant IMO

Everything was getting more & more musty smelling & that's just gone now. Fading (if it happens) doesn't worry me at all