We know the black color is the beautiful and bright color. It gives us more confident and commanding power. To maintain the hair color as black here are some tips.
Take a two bunches of curry leaves and dry it. Make this as a powder. Heat the gingelly oil and add the curry powder. Then it turns to black let them settle and soak for week. After this you can apply this oil to your hair. Continue this for six months. It will slowly turns into black color.
Take amla daily in the form of nellikkai lehyam (Amla). The other option is take a small spoon of amla powder and mix it with honey. Take this daily.
You may take bhringaraj ( karisalankanni), Amla powder or fresh amla, lemon, curry leaves, henna leaves, hibiscus leaves, milk, coconut milk, hibiscus flower,kadukkai grind all these ingredients. Heat the gingelly oil and just add this and wait for 20 minutes till the color has change. This herbal oil is surely change into black.
Should eat the items which are rich in iron like date fruit, amla, curry, sundakkai. Fenugreek which have a quality to making our body cool. While you using gingelly oil avoid the fenugreek because both have cooling effect.