Most salons offer quick glossing treatments, which are amazing for rebooting the vibrancy of your dingy highlights or all-over color, but that requires time and extra cash. Luckily, in talking to a few hair experts, we discovered that that an at-home hair gloss can be just as effective at extending the life of your color. Think of it like a top coat nail polish for your hair. Ahead, shop the best hair glosses on the market.