Henna hair dye is a natural colouring product ... If you are using an acidic liquid, add about 2-3 tbsp as it releases the dye. Mix well till you get a smooth, pudding-like consistency.

To effectively grow dye-producing plants in a rooftop garden, choose containers with excellent drainage to prevent root rot.

Yes, henna, being a natural hair dye helps conceal grays. As mentioned above, it releases a reddish-brown color when mixed ...