Eggs Eggs are rich in biotin and vitamin B. These two nutrients are very important for the health and maintenance of your hair. Biotin is a star element, which helps to keep your hair shiny and lustrous. Biotin is also present in many shampoos and conditioners and is one of the important elements needed for hair health.Some eggs are laid by female animals of many different species, including birds, reptiles, amphibians, mammals, and fish, and have been eaten by humans for thousands of years. Bird and reptile eggs consist of a protective eggshell, albumen, and vitellus, contained within various thin membranes.