A Victoria's Secret Model Colorist Reveals the Secret to Sexy Brunette Hair

Blondes may have more fun, but if the Victoria's Secret Fashion Show runway is any indication, brunettes have all the sex appeal. You're not imagining things: there was a brunette majority on this year's catwalk, with about 65 percent of the models rocking darker strands. Considering that naturally flaxen beauties make up only 2 percent of the world's population, we're excited to see that chocolate-haired goddesses are seemingly embracing their roots.

Two of the most glorious brunettes of the Victoria's Secret Fashion Show, Irina Shayk and Barbara Fialho, sought the expertise of celebrity colorist Shah Karegar before they hit the runway. According to Karegar, keeping your brunette hair sexy is simple (and completely free).

"Try not to shampoo it more than twice a week," Karegar advised via email, regarding natural and color-treated hair. "The reason why a lot of brunettes get mousy is because their hair is dehydrated, whether it's [from] the sun or being shampooed quite often." He also recommended hydrating it "as much as possible" each week with a high-quality conditioner. (Try DIYing your hair own mask with coconut oil with one of our recipes.)

Karegar shared that it's critical to avoid overprocessing the hair of his model clients. This is because styling and traveling can result in major stress on hair. Combining that with the damage of coloring can result in brittle and decidedly unsexy strands. To keep hair strong, he uses Uberliss's Bond Treatment when coloring and lifting. This professional product reduces hair porosity, thus preventing breakage and damage.

Read on to see what color techniques he used on Irina and Barbara so you can prepare for your next salon appointment.