I have v thick hair, that comes a couple of inches past my shoulders. Because it's so thick it tends to hang quite heavy, so to get volume I usually backcomb the shit out of it, with lots of hairspray and dry shampoo. Probably not a great technique.
What magical products can I put in my hair that will make it, to use the technical term, go big? I cannot blow dry to save my life, I usually just tip my head upside down and blast it.
TIA 