This article comes from the WeChat public account: nut shell (ID: Guokr42) < span class = "text-remarks">, author: Tian Yi generations, from the title figure: the movie “Ex Machina”
The faces of young and old people are very different. Even if we smooth out the wrinkles on the skin, we can see that the shapes are different. Because aging not only makes the surface skin lose its elasticity and luster, the deep bones and muscles are also slowly aging.
Like the following two faces, although there is no hint of skin color and fine wrinkles, the difference is still obvious.
Comparison of young and old faces 丨 References [1]
Face aging, starting from deepening the nasolabial fold
As you age, your entire face changes, but the rate of aging varies from part to part.
A recent study of northern Han women used three-dimensional stereoscopic imaging technology to describe in detail the changes in the facial morphology of women of different ages. The study divided 187 people into 4 groups according to age. After collecting facial images of each person, an average face model of women of this age was generated [2] .
Compare the three-dimensional flatness of each groupScientists found that compared with women aged 20 to 29, the overall face of the group aged 30 to 39 changed little, only the nasolabial fold was slightly deepened, and the middle of the face, eyes and lips were slightly recessed.
By age 40 to 49, the forehead also moves backward, the middle of the face becomes flat, the nasolabial folds and tear grooves are obviously deepened, and the chin begins to protrude, and the cheeks on both sides sag.
The oldest 50-65-year-old group, in addition to the above-mentioned grooves continue to deepen and extend, the changes in facial features are also more obvious. Among them, the eyes are smaller, the outer corners of the eyes are drooping, the nose is longer and wider and the tip of the nose is drooping, and the lips are thinner and the position moves downward.
Different color circles indicate aging changes: pink-longitudinal groove and lateral groove between eyebrows, red-lateral eye droop, blue-lateral groove under eyelid, green -Nasolabial fold, black-sagging cheeks 丨 References [3]
Aging is not only on the epidermis, but also deep into the bones
These changes in face shape come from the combined effects of gravity, bone resorption, decreased tissue elasticity and changes in fat position.
Face bones are the basic frame of appearance, supporting and fixing the muscles, ligaments and other soft tissues above. When the shape of the bone changes, the skin on it will naturally change position.
Bone is the supporting frame
Bones do n’t start to deform suddenly in a certain year, but they grow and absorb throughout their lives, constantly changing their shape.
The deepening of the nasolabial fold that first appeared during aging is related to the overall retraction of the maxilla in the middle of the face. Bone changes loosen facial ligaments and move fat down