AHU Natural Instant Black Hair Dye Shampoo 500 ml AHU Natural Instant Black Hair Dye Shampoo is an exclusive, non-toxic formula based on selected plant extracts and natural ingredients. Shampoo and dye hair black in just 5 minutes. Leaves hair black, shiny, soft and silky. It cleans, colors, moisturizes and protects dry hair. It also prevents aging and graying of the hair fiber. Application: Apply to damp hair. Massage and lather. Leave on for 5 to 10 minutes, then rinse thoroughly. If desired, with AHU Red Onion & Rosemary Complete Conditioner. Henna Leaves - Color, repair and strengthen hair. Plant Indigo (tint) – Prevents hair from graying. Ginger – Naturally anti-inflammatory and powerful. antiseptic. Camellia Seed Oil – Restores natural shine to hair. Polygonum Multiflorum - Natural hair darkening. Tamarind – Prevents hair loss.