Figure 1.
Skin aging stages. The figure denotes age intervals for each stage of skin. The young-adult, middle-aged, and elderly stage of skin are defined as 19 to 45 years old, 43 to 65 years old, and 64 to 86 years old, respectively.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.