Elastin is an extracellular matrix (ECX) protein that provides elasticity and resilience to organs and tissues. Your hair also contains elastin; it’s found inside the skin’s dermis, where your hair follicles are located. Because of this, elastin is great for your hair! Elastin adds glossiness to your hair. If you suffer from damaged hair, elastin can help repair that damage. It also adds body to your hair, ideal for volumizing shampoos or any products for thin and oily hair.