1. Amla Powder
Heat 1 cup amla powder in an iron vessel until it turns into ash. Add 500ml coconut oil and simmer on a slow flame for 20minutes. Let it cool and stand for 24 hours, and then strain the next day into an airtight bottle. Use this twice a week as a hair oil massage.
2. Curry Leaves
Take a bunch of curry leaves and grind them with 2 tsp amla powder and 2 tsp brahmi powder. Apply this as a hair mask on the hair, making sure to cover the roots. Leave on for an hour and rinse with a mild herbal shampoo.
3. Indigo and Henna
Indigo, or neel, as it is more commonly known, is a natural colourant used since ancient time to colour hair. It creates a bluish black colour and can be mixed with henna to cover grey areas, making the hair acquire a darker colour.
4. Coconut Oil
Coconut oil & Lemon Juice mixed together can help darken the hair. The combination of these two causes a chemical reaction which darkens the hair naturally over a period of time.
5. Black Tea
Black tea is another effective ingredient which can help prevent grey hair. I have used it as an after shampoo rinse, created a shampoo out of it and used it as a mask as well. Take tea brew, approximately 200ml, and use it as a leave in conditioner on your hair after shampooing. You can also soak black tea leaves for 2 hours in warm water and grind it to a smooth paste. Mix with some lemon juice and apply it as a hair mask for 40minutes before rinsing the hair.
6. The Herbal Mix
This herbal brew is excellent to slow down the greying process and you can easily make it at home. Take 1 tsp amla powder, 2 tsp black tea, 1 tsp strong coffee, 1/2 an inch piece of kaththa, 1 piece of walnut bark, 1 tsp indigo, 1 tsp brahmi powder, and 1 tsp triphala.
Add all the ingredients to 2 litres of water and simmer on a slow flame for 30minutes. Let it cool, then strain into an air tight bottle. Apply on the roots for 30minutes before shampooing and you will see a marked difference in the colour of your hair