Black Henna Hair Dye Black Henna Mehandi by Amir’s is a plant-based coloring inspired by traditional care treatments from India. It is intended for those who want to achieve a deep, cool black or darken their natural color while giving hair shine and optical density. The finely ground powder, when mixed with warm water, creates a smooth paste that spreads evenly and adheres well to the hair. The effect is a uniform, saturated shade and smoothing of the cuticle – hair looks healthier, is more voluminous, and frizzes less. The product is suitable for refreshing color along the length and for dyeing roots. How to use: in a clean bowl, pour the powder, gradually add warm water (optionally a bit of lemon juice or tea for better creaminess), mix to a consistency of thick cream. Apply to dry or slightly damp hair, protect the skin along the hairline with a greasy cream. Leave on for 30–90 minutes depending on the desired effect, then rinse thoroughly without shampoo and allow the color to oxidize for 24–48 hours. For a more lasting result, avoid intense washing during this time. Important: the so-called "black henna" can be a mixture of henna and other coloring ingredients. Always perform an allergy test 48 hours before use and a strand test; do not use on irritated skin. If you have bleached or permed hair, start with a shorter holding time. Store the powder in a dry, cool place, tightly closed.