Here’s a trick for flat roots. It’s easy. Just flip your part. Bam! Instant volume. Or, if you’re a “plan ahead” type of girl, you can “start with the opposite part before you put on your hat, and switch back to your original part when you take off your hat for even more volume,” says Cristophe.

Whatever you do, just don’t flatten your hair down near the scalp. That’s where all of the oils are. Brush it straight back, away from your face before you put your hat on. That way, your hair will fall back into place with more body later, says Grmolyes.