I lurk here mostly, but am wondering of any of you wise people (who entertain me daily and whose beauty advice I trust) know if it's acceptable to use regular hair conditioner in place of leave-in? I love a leave-in, but you usually end up paying more for less and I've started wondering...daren't try it until someone advises me yay or nay because bad hair days haunt me. I have a giant bottle of the Olapex rinse-out conditioner that I got on offer, so I was thinking about that specifically. I love the leave-in one (no.6?) but it's a million pounds for a thimbleful.