Kerastase Paris Fix Fabulous Hairspray
The product: Kerastase Paris Fix Fabulous Extra Strong Hold Hairspray ($37, salons only)
Why we want it: This isn't your everyday hairspray. Fix Fabulous is the secret weapon you pull out if you want to slick your hair back into a faux undercut or create an impenetrable updo. For a less harsh hold, spray the product on a comb before brushing through your strands.
Available: February 2015