Protein is a building block of hair, and a good amount of protein is required to keep hair healthy and shiny. In the Keto diet, protein intake significantly reduces, and so is the amount of biotin in the body. It results in the malnourishment of hair and hair fall. To avoid hair loss, take a good amount of healthy nutrients and vitamins. Stay away from stress and keep the body hydrated as dehydration also causes dry hair. If hair fall continues, consult with you and follow the advice.