What is the main component of skin that gives it elasticity?

The primary component of skin that provides elasticity is collagen. Collagen is a structural protein that forms a scaffold in the dermal layer of the skin, helping to maintain its firmness and resilience. While elastin also contributes to the skin's flexibility and elasticity, it is the collagen fibers that are more predominant and provide overall support to the skin structure.

Keratin, on the other hand, is a protein that primarily makes up hair and the outer layer of skin but is not responsible for elasticity. Melanin is the pigment responsible for skin color and does not influence the skin's elasticity. Understanding the roles of these different components helps clarify why collagen is vital for maintaining skin health and elasticity.