Your collagen fibers in your skin are your ‘skeleton’ of your skin that keeps it in place. The elastin fibers in your skin provide elasticity (bounce back capability) of the skin and the hyaluronic acid gives fullness and plumpness to the skin. All of these aspects important for the youthfulness of the skin reduces with age and leads to skin sagging, less elasticity and dullness of the skin.
The collagen fibers do not only reduce in quantity but also stretches due to gravity’s effect on the skin and weight fluctuations.