Hair roots come with sebaceous glands, which secrete an oily substance called sebum. In fact, this sebum benefits the hair. Sebum keeps the hair healthy and smooth and it keeps the hair from excessive drying and from breaking. Excessive sebum production is the cause for oily hair.
You can make yourself a hair mask with 1 egg yolk, 1 tsp coconut oil
and few drops of lemon. Apply this evenly on your scalp and let it sit for good 20-25 minutes. Next, rinse thoroughly with cold water.