This Woman's Secret Rainbow Hair Will Make You Want Underlights ASAP

Bright rainbow hair is enticing, but hiding hues throughout your natural strands also adds a fun element of surprise.

One YouTube user utilized the hidden rainbow technique to show off a sneaky patch of color in a video. At first glance only her platinum-blond locks are visible, but when she flips her mane over, she reveals neon shades. Her colorful coif is courtesy of the underlights hair dye technique.

Instead of painting your entire head with various pigments, underlights are focused beneath the top layer of your hair. Color is placed in the back so that it can be hidden by the rest of your strands. When your strands are down, your natural tint will cover the rainbow streaks. However, when you put your hair into an updo, you get to show off your secret color. The trick is perfect for ladies looking to dabble in the rainbow trend without making a superbold statement. Watch the video above to see her hair transform, and check out more edgy examples of underlights to get inspired.