Which of the following is NOT considered a skin condition?

Moisturization is not considered a skin condition because it refers to a process or treatment aimed at hydrating and conditioning the skin rather than describing the skin itself. While couperose, sensitive skin, and wrinkling are all terms that describe specific skin conditions or concerns—couperose relating to redness and visible blood vessels, sensitive skin referring to a heightened reaction to various stimuli, and wrinkling indicating the presence of lines and creases—moisturization is an action taken to improve skin health and appearance. This distinction helps clarify the difference between conditions that affect the skin's state and the practices used to maintain or enhance its condition.