why is grease stringy
Greasy Hair Often Linked To Genetics. Many hair experts believe that the cause of greasy hair is hereditary. Yes, it is believed to be genetic. The same hair experts do not believe that it's possible to retard the production of oil and grease delivered to the strands through changes in diet.egardless of how or why it happens, greasy hair is directly related to the overproduction of sebum, a waxy type of substance naturally occurring in the body which is designed to keep hair supple, soft and waterproof. Sebum is produced by the sebaceous glands.