Tara Rasmus, beauty contributor

Alterna Caviar Blonde Brightening Shampoo, $36, available at Ulta.

"Ever since I got amazing balayage highlights from Dana at Sally Hershberger (lucky, I know), I have been obsessed with keeping my highlights as fresh and bright as when I left this salon. I recently discovered this shampoo, and I have decided that no blonde should be without it, ever. It somehow perfectly cleans your hair (leaving behind the most beautiful scent), while also never weighing it down. As a bonus, the purple tint gives your color a subtle boost every time you use it. Now I just need to get my hands on the rest of the line..."