Why hair is graying

Poetry is a very complex subject, and studies and research have only recently shown its structure and structure. It consists of fibers composed of proteins called Keratins. The hair color depends on a dye called melanin, which is produced in special cells called melanocytes.
The hair begins to lose color when melanocytes die out as they age or lose the ability of natural melanocytes because of trauma or psychological or neurological pressure. There are many documents that confirm that some people have lost their hair color overnight.