Egg yolk is used in shampoos and conditioners.
Both shells and interiors of eggs are used. Experimental Uses Egg white is used as a protein reference in feeding laboratory animals. Egg yolk and egg products are used in laboratories as a medium for the growth of microorganisms. Medical and Pharmaceutical Fertile eggs are used to manufacture many vaccines, as a source of purified proteins and as an aid in the preservation of bull semen for artificial insemination.