Why is coconut oil most commonly used?

Why is coconut oil the most important or common oil used for oiling hair ?

Coconut oil is often said to be the best oil to use on your hair to reduce protein loss and keep it looking healthy. Coconut oil is predominantly made up of a medium-chain fatty acid called lauric acid. This gives coconut oil a long, straight structure, which is more easily absorbed deep into the hair shaft. In a study with coconut oil, sunflower oil & mineral oil, coconut oil came out on top in all of their studies and reduced protein loss in hair that was undamaged, bleached, chemically treated and UV exposed.

Ref: Coconut Oil for Your Hair: Benefits, Uses and Tips