Realistic Vivid Colour Protein Infused Permanent Colour brings vibrant tones and a high-gloss look to naturally dark hair in an ammonia-free solution. Specially formulated for all ethnicities, hair types, and texturesu2014from straight to wavy to curlyu2014this permanent hair dye provides long-lasting color and at-home convenience.The exclusive Color Lock Technology lets most users enjoy vivid color for up to 24 washes without reapplication. An infusion of protein provides extra TLC for locks and creates a lustrous sheen.