This american research studied not only the absolute thickness of the skin and its layers, but instead it used the index of relative thickness. It is well known that the thickness of various layers of the skin depends on age, gender, ethnicity, and many other factors, therefore, it will not be appropriate to transfer the numbers obtained for any one population of people to everyone and everything - for example, the thickness of the skin of a teenager will clearly differ from the thickness of the skin of an elderly person.
The relative thickness implies that we compare the thickness of the skin in different parts of the face of a particular person with the thickness of the thinnest part of his OWN skin. The obtained results can be extended to other human populations with a greater degree of legitimacy.
To create a thorough map, the authors conducted a punch biopsy (received small skin samples) from 39 different facial areas of 10 elderly people. Then they carefully measured the thickness of the epidermis and dermis of each individual sample, compared them with the minimum indicators for this particular person and compiled a general map of the thickness of the epidermis and dermis of the facial skin - you can see the result in the illustration to the post.
To summarize, as expected, the thickest skin is in the lower third of the nose (in particular, in the lower part of the nasal wall), and the thinnest is on the inner (medial) side of the upper eyelid. However, although the thickest and thinnest sections of the dermis were located in the same areas, there was no such connection with the epidermis. The thickest epidermal layer was on the upper lip, and the thinnest - in the area behind the ear.
The authors recommend referring to this map when planning injections and other cosmetic procedures.
Source: Chopra K, Calva D, Sosin M, Tadisina KK, Banda A, De La Cruz C, Chaudhry MR, Legesse T, Drachenberg CB, Manson PN, Christy MR. A comprehensive examination of topographic thickness of skin in the human face. Aesthet Surg J. 2015 Nov; 35 (8): 1007-13.
- Korean Kiwi Beauty