As people undergo ageing, the facial features undergo three distinct processes: "Sinking", "Sagging", and "Wrinkling". These changes take place not only due to changes in the skin, but also due to changes in soft tissue, musculature and even bone structure beneath.
The Process of Facial Ageing: Sinking, Sagging and Wrinkling :
Sinking - Skin's lower layers are made up of collagen and elastin fibres housed in a matrix of ground substance composed of glycosaminoglycans and hyaluronic acid.
Sagging - The most successful anti-ageing treatments for 'saggy' faces involve a combination of volume restoration, and collagen stimulation.
Wrinkling - Wrinkling is exhibited by clearly defined patches of wrinkly skin, often located around the eyes, brow and lips.