*This article may have affiliate links, which means we may receive commissions if you choose to purchase through links we provide (at no extra cost to you). For more details, please read our privacy policy/affiliate disclosure. Thank you for supporting the work we put into this blog!

A wrin­kle, also known as a rhytide, is a fold, ridge or crease in the skin. Skin wrin­kles typ­i­cal­ly appear as a result of aging process­es such as gly­ca­tion, habit­u­al sleep­ing posi­tions, loss of body mass, or tem­porar­i­ly, as the result of pro­longed immer­sion in water. Age wrin­kling in the skin is pro­mot­ed by habit­u­al facial expres­sions, aging, sun dam­age, smok­ing, poor hydra­tion, and var­i­ous oth­er factors.