Wella Professional Brilliance Shampoo and Conditioner

Want to get more mileage out of your highlights? Jennifer J. likes Wella Professional Brilliance Shampoo and Conditioner, $12 each, from the brand's shine-enhancing line for color-treated hair.

"A lot of people spend their money on color, but then don't want to spend even more cash on another product to help maintain their shade. Luckily this line is so reasonably priced, especially considering it will help you get the most out of your color treatment," she says.