Speaking of going days between washes, Kérastase’s new Cristalliste line is comprised of four products that are all about giving long hair a healthy dose of moisture at the ends while keeping the roots fresh. It’s also designed with young hair in mind, giving a look that’s weightless and shiny but without the too-clean “squeak.” (Think: ‘70s songstress hair or that of today’s off-duty models.) Rub a drop or two of the Serum Lumière Liquide into dry hair for added gloss that won’t weight it down.
Kérastase Cristalliste Serum Lumière Liquide ($42, at salons)
