If there's one celebrity who's mastered the art of effortless-looking hair, it's Amal Clooney. The star's wavy, youthful 'dos are always on our moodboards, and we've finally found the hair gloss that's one of the secrets to her alluring locks. Best of all, it's on sale now, starting at just $10. Celebrity hairstylist Dimitris Giannetos previously told InStyle that L'Oreal Paris' Le Color gloss is ideal for easily hydrating your hair. After evenly applying the lightweight product to clean, wet strands and leaving it in for five to 15 minutes, rinse it out to reveal a shiny, refreshed mane.