Somewhere between the “glass skin” obsession and our collective search history for “salon blowout at home”, hair gloss quietly became the term everyone’s using and nobody’s quite defining. It isn’t a serum, a hair oil or a leave-in—though it can behave like all three depending on the bottle. It isn’t the same as a hair dye either, although some are pigmented enough to enhance your colour. What every version shares, from the five-minute drugstore rinse to the treatment your colourist books you in for, is one job: sealing the hair’s outer layer flat enough that light bounces off it instead of scattering. That’s the unglamorous science behind the “wet look” shine everyone’s currently chasing.
Not every gloss does the same thing, and it’s worth knowing the difference before you add one to your basket. Kérastase’s and dpHUE’s versions are built to hold on to your existing colour and slow the fade between salon visits. The L’Oréal, Ouai, and Moroccanoil versions are colourless, working purely on shine and softness regardless of your shade. And then there’s the one genuine outlier here: Redken’s Shades EQ, which you can’t pick up and use at home at all—it’s a demi-permanent colour and gloss service, mixed and applied by a colourist, which makes it less a shopping recommendation and more a phrase to bring up next time you’re in the chair.
Most of the at-home options ask for five minutes, once a week, straight after shampoo—roughly the commitment of a hair mask, minus the weigh-down between washes. Below, the glosses worth adding to your routine, whether your hair needs a shine top-up or your colour is fading faster than you’d like.
