Have you ever noticed your hair color change a few weeks after coloring? Your hair might start to take on an undesired yellow or orange tone. This is referred to as brass – the appearance of unwanted warm tones in color treated hair. Say no to brass with Elvive Color Vibrancy Purple. This color correcting formula is enriched with purple pigments to neutralize brass and help keep color vibrant in between colorings. Say no to brass. Go Purple.