Sleep wrinkles: Facial aging and facial distortion during sleep

Abstract

Facial aging involves the development of wrinkles through distinct internal and external mechanisms. While expression wrinkles arise from repetitive muscle contractions, sleep wrinkles result from mechanical distortion—including compression, tension, and shear forces—applied when the face is pressed against a sleep surface in lateral or prone positions. These wrinkle types differ in etiology, anatomical distribution, and directionality; sleep wrinkles typically occur near facial retaining ligaments and often run perpendicular to expression lines. As skin ages, biochemical shifts such as collagen loss and increased dermal stiffness reduce the tissue’s ability to recoil after deformation. Repetitive compression during sleep acts as a chronic form of external tissue expansion, which may lead to permanent skin distortion and exacerbate the appearance of aging. Because sleep wrinkles are independent of muscle activity, they are unresponsive to neurotoxin treatments. Management strategies instead rely on the mitigation of mechanical forces through supine sleep positions or specialized bedding designed to minimize facial contact. – AI-generated abstract.