Bigen Speedy Hair Colour in Brownish Black is a quick-acting conditioning hair color from Japan's #1 brand. This gentle formula provides rich, natural-looking color in just 10 minutes while conditioning the hair for a soft, healthy finish. This product is designed for easy at-home application and delivers consistent, even color coverage. The conditioning formula helps maintain hair health during the coloring process. As with all hair dyes, a patch test is recommended 48 hours before use to check for any potential allergic reactions. The shade Brownish Black (20) provides a deep, natural-looking dark color with subtle brown undertones.