The combination of curry leaves and coconut oil is one of the perfect ways on how to naturally darken your hair at home, which you can easily apply:
Ingredients:
• 1 cup of coconut oil
• Some curry leaves
Instruction:
• You simply put the curry leaves into a pan containing the coconut oil.
• Then you boil the coconut oil for a few minutes and then remove the pan from the heat.
• Now, you remove the curry leaves and let the coconut oil cool down to the room temperature.
• You use this coconut oil to gently massage your scalp and hair. You wait for up to 1 hour and wash off your hair and scalp with your shampoo.

Credit: VKOO web post