the reason why the bleached ones dry soo much slower is because when you bleach your hair you lift all of the stuff (melanin, poly peptide bonds, dihydrogen sulfide bonds) out of your hairs cortex...and that makes it more porous.
yeah i know this.. i might dye them back to brown, or pay a visit to the hairdressers and get it done
I just use 1005 natural soap bar derived from natural ingredients to clean my dreadies out, but when i wanan really wash up, i just use straight bicarb soda,works perfect for me