Dream Filter collects and lifts off minerals from your strands to unveil and protect optimal colour. This breakthrough pre-shampoo spray filters out minerals typically found in tap water that destroy the clarity, intensity and beauty of your hair color. Traces of copper, iron, magnesium, calcium, chlorine and other elements that can otherwise remain in your hair will warp your color over time, making it look yellow, brassy, ashy green, or dull, dark and dingy, depending on the mineral content. This hair treatment is fragrance-free, gluten-free and phthalate-free and works well with all hair types.