Editing Wrinkle (section)

{{Short description|Crease on otherwise smooth surface}}
{{Redirect|Wrinkles}}
{{For|the writer and filmmaker|Margaret Wrinkle}}
[[File:Old Bangladeshi drinking tea cropped.jpg|thumb|right|Wrinkles on the face and hands are a typical sign of aging]]

A '''wrinkle''', also known as a '''rhytid''', is a fold, ridge or crease in an otherwise smooth surface, such as on [[skin]] or [[fabric]]. [[Skin fold|Skin wrinkles]] typically appear as a result of [[Senescence|ageing]] processes such as [[glycation]],<ref>{{cite journal |last=Danby |first=FW |title=Nutrition and aging skin: sugar and glycation|journal=Clin Dermatol|date=Jul–Aug 2010|volume=28|issue=4|series=4|pages=409–411|doi=10.1016/j.clindermatol.2010.03.018|pmid=20620757}}</ref>  habitual sleeping positions,<ref>{{cite web|last=American Academy of Dermatology |title=Causes of Aging |url=http://www.skincarephysicians.com/agingskinnet/basicfacts.html|work=AgingSkinNet|publisher=American Academy of Dermatology|access-date=5 March 2013}}</ref> loss of body mass, [[sun]] damage,<ref>[https://www.webmd.com/beauty/cosmetic-procedures-wrinkles Cosmetic Procedures for Wrinkles]</ref> 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.<ref>Anderson, Laurence. 2006. ''Looking Good, the Australian guide to skin care, cosmetic medicine and cosmetic surgery''. AMPCo. Sydney. {{ISBN|0-85557-044-X}}.</ref> In humans, it can also be prevented to some degree by avoiding excessive solar exposure and through [[dieting|diet]] (in particular through consumption of [[carotenoid|carotenoids]], [[tocopherol|tocopherols]] and [[flavonoid|flavonoids]], vitamins (A, C, D and E), essential omega-3-fatty acids, certain proteins and lactobacilli).<ref>{{cite journal | pmc=3583891 | year=2012 | last1=Schagen | first1=S. K. | last2=Zampeli | first2=V. A. | last3=Makrantonaki | first3=E. | last4=Zouboulis | first4=C. C. | title=Discovering the link between nutrition and skin aging | journal=Dermato-Endocrinology | volume=4 | issue=3 | pages=298–307 | doi=10.4161/derm.22876 | pmid=23467449 }}</ref>