Photo: Marko Metzinger/Studio D
Why it's a winner:
Both varieties of the treatment—a lightweight mask for fine to normal hair, and a creamy one for coarse hair—contain diamond dust, which reflects light and gives hair instant sheen. Vitamin E in the formulas protects haircolor and prevents it from fading.
Rick Wellman, co-owner of Patrick Melville Salon & Spa in New York City
$12; wella.com for salons