Influence of Aging, Sagging and Fat Mass on the Natural Skin Tension of the Human Upper Chest, Belly and Arm In Vivo

¹Univ Lyon, Ecole Centrale de Lyon, CNRS, ENTPE, LTDS, UMR5513, 69130 Ecully, France

²Laboratoires Clarins, Pontoise, France

*Corresponding author: Meriem Ayadh, Univ Lyon, Ecole Centrale de Lyon, CNRS, ENTPE, LTDS, UMR5513, 69130 Ecully, France; E-mail: [email protected]

Received Date: April 25, 2023

Publication Date: May 10, 2023

Citation: Ayadh M, et al. (2023). Influence of Aging, Sagging and Fat Mass on the Natural Skin Tension of the Human Upper Chest, Belly and Arm In Vivo. Dermis. 3(1):4.

Copyright: Ayadh M, et al. © (2023). 

ABSTRACT

With aging, the skin undergoes changes in its surface and structure. Topographically, the most visible manifestation of aging is the appearance of wrinkles and skin sagging (ptosis of certain body areas). From a mechanical viewpoint, there is an overall loss of skin elasticity and a decrease in natural tension. The aim of this study is to characterize the natural human skin tension In Vivo of the upper chest, arm and belly by studying the variation of the density and orientation of the tension lines with age, and also the influence of some factors such as skin sagging and fat mass.

The tests were carried out on 41 volunteers: 18 young volunteers [20-30 years old] and 23 elderly volunteers [50-65 years old]. These tests consist of impedance and centimetric measurements, body photographs and skin's relief analysis. The results show that the main direction of skin tension depends on the body area. With aging, the skin lines density decreases in the directions of the lines perpendicular to the tension lines (of Langer). The accumulation of fat and/or pregnancy favors the relaxation of the skin tension.

Keywords: Human Skin Tension, Aging, Ptosis, Skin Relief, In Vivo