Foilyage Is the Key to Low-Maintenance Hair Color

As Rokinz mentioned, foilyage looks similar to balayage, but it differs slightly in the application. Here's a quick refresher on balayage: the hair is hand-painted and left to process in the open air, or occasionally lightly wrapped in plastic wrap. Foilyage, on the other hand, utilizes foil — as the name suggests. "The hair is lightened following the same process used in the balayage technique, but wrapped up in aluminum foils, creating a warmer environment for the hair to lift," Rokinz says.

Each method delivers a slightly different result. "I find that the balayage technique lifts the hair level more slowly and achieves a warmer shade, while foilyage allows you to get more lift, making the hair shade lighter and brighter."