Lauric acid is found in coconut oil. This acid goes down the scalp with the help of hair fibers and nourishes the hair roots.
Curd is actually a good source of lactose and protein. When applied to the hair, curd not only deeply nourishes the hair but also helps in protecting it from dandruff.
Neem is a natural antiseptic. It has also been used for thousands of years to deal with the problem of hair.