Cool What Is Brassy Hair Ideas. These undertones appear when the bleach in your lightening mixture doesn’t remove all the melanin from. It's quite common for blondes.

Web brassiness in hair occurs when the natural hair color is lifted or lightened, allowing warm tones to show through. When you bleach or lighten your hair, the warm tones from your natural color have a tendency to come out. Healthline tells us it occurs when there is too much of a contrast between your natural pigment and the.