Signs of aging appear on every face, but these age-related changes occur in different ways. However, despite this, we can classify the signs of aging according to certain categories. 

 

Main criteria to consider:

- Condition of soft tissues: firmness and elasticity.

- Dryness and thinning of the skin: a decrease in the amount of fluid in the skin and a general thinning of the dermis, epidermis and subcutaneous fat.

- Wrinkling: depth and structure of wrinkles.

- Deformation: changes in the oval and shape of the face associated with changes in muscle and bone tissue, as well as with the redistribution of fat packets on the face.

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Analyzing the above criteria, skin aging morphotypes were identified and classified by Inna Kolgunenko at 1974. According to this classification, there are five types of facial aging: tired, finely wrinkled, deformed, combined and muscular types of aging. Additionally, they are considering another one - senile, exhausted. It occurs in women over 70 years of age.