I can't comment on the effectiveness of using oil-only to get rid of product build up, my only guess is that it would depend on whether the products you're trying to get rid of are oil soluble or water soluble. Oh the science!! LOL... I would guess though, that some are and some aren't. And either way you're going to have to do a low-poo afterwards anyway, to get rid of the excess oil, and that in itself will take care of some product build up. Anyone with a better handle on this, please chime in!
2a/b, high porosity, fine strands, average density, just about shoulder blade length

My hair loves moisture!

currently mod-cg , using low-poo and not totally cone-free yet. I'll get there though!