Umberto Giannini Curl Friends Quick Fix Spray
It's amazing, really helps define curls, its esp. great on dry hair, i have to tie my hair up for work and that makes my curls disappear but a little spray and scrunch and they're perfect again!
I'm definately getting this again. it last ages as well and you can get the little mini cans of it so take in your handbag. it smells great too