When Gwen Stefani comes to mind, we think of her icy, platinum blonde hair that she’s sported throughout the years. It turns out that the judge on The Voice is not a natural blonde but actually a brunette, so she knows a thing or two about upkeep. She often works with hairstylist Danilo Dixon, known as Danilo, who formerly served as VP and creative director for Oribe. He revealed that he dyes Gwen’s hair blonde every week—yes, we were shocked too. While we would normally assume that frequent dyeing sessions aren’t great for strands, his method changes the game a bit. He explained that he’s developed a high-lift formula for the star, allowing him to shift shades with a new product rather than sticking to bleach. As for maintaining the health of her hair? Danilo swears by leave-in conditioner for an added boost of moisture and restoration. Here, we’ve selected a few of our own favorite leave-ins to get you started if your locks are in need of some love.