The richly pigmented formula is now even better with the addition of the clinically proven ingredient Keratin. Because the Liquid Keratin Hybrid tint is more intense in terms of color, even faster tinting is more time-saving for you as a stylist! The product is a hybrid dye, meaning the Brow & Lash Tint is in between normal dye and henna. Besides Keratin, it also contains Aloe Extracts for an antibacterial effect. It offers insanely deep coloring on the skin while protecting and revitalizing the eyebrow and lash hairs through its nourishing and protective ingredients. The easy-to-mix eyebrow dye colors skin for up to 10 days and eyebrow hairs for up to 6-8 weeks.