Skip the suds: It makes sense. Washing hair washes out color too. One way the Beauty Lab tests color fading is by repeating washing cycles, because just plain water (not to mention shampoo's surfactants) can leach dye molecules from strands, the Lab explains. "Wash colored hair every other day at most," Hill says. Switch products regularly : The Beauty Lab has found that using a color_depositing shampoo, conditioner or hair_gloss treatment once a week between dye jobs can revitalize hair color. Try Seal holders Pantene Pro_V Brunette and Highlighting Expressions Shampoo and Conditioners. Gloss it up: Like lip glosses for strands, hair glosses leave a hue_boosting hint of color and shine.
Don't trust the model on the box. Sure, the woman smiling on the front of the box looks beautiful, but the color of her hair is a fantasy. "The color always ends up lighter than the model's hair on the packaging," says colorist Dana Ionato of the Sally Hershberger Downtown salon in New York City. "The developer in at_home permanent dyes is very strong stronger that the ones we use in the salon so it lifts the color and makes it lighter than what you see on the box." A better estimate on how the color will end up is the chart on the top of the box, which shows you the final color you get from a range of different hair_color shades.