Elastin is a protein found in the skin, blood vessels, and lungs.
Each elastin molecule can expand and contract, so the tissue in which this
protein is present gains elasticity.
Its reduction has effects on the skin (wrinkles, relaxation) and blood
vessels.
Elastin is combined with collagen in cosmetics to give hydration and
elasticity to the skin.
So by moisturizing the skin, you also avoid wrinkles. For this reason, they
are used in anti-aging products.