The structure of the skin is supported by the extracellular matrix, which gives the skin elasticity and resistance.

The extracellular matrix is a structure composed of proteins and fibers, produced mainly by fibroblasts.

The component that bonds these elements is collagen, a protein that ensures the structural integrity of the skin.

During the aging process, collagen fibers deteriorate, resulting in a loss of mechanical tension and the appearance of wrinkles.

Botulinum toxin treatment is used to eliminate dynamic or expression lines.