# Nasolabial fold

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Two skin folds in the face

Nasolabial fold Human face, with left nasolabial fold marked in black ellipse Identifiers MeSH D060052 TA98 A01.2.01.017 TA2 220 FMA 75018 Anatomical terminology [edit on Wikidata]

The **nasolabial folds**, commonly known as "**smile lines**"[1] or "**laugh lines**",[2][*[self-published source](https://en.wikipedia.org/wiki/Wikipedia:Verifiability#Self-published_sources)*] are [facial features](/source/Facial_feature). They are the two [skin folds](/source/Skin_fold) that run from each side of the [nose](/source/Nose_(human)) to the corners of the [mouth](/source/Mouth_(human)). They are defined by facial structures that support the [buccal fat pad](/source/Buccal_fat_pad).[3] They separate the [cheeks](/source/Cheek) from the [upper lip](/source/Upper_lip). The term derives from [Latin](/source/Latin_language) *[nasus](https://en.wiktionary.org/wiki/nasus#Latin)* for "nose" and *[labium](https://en.wiktionary.org/wiki/labium#Latin)* for "[lip](/source/Lip)". Other people suggest the term **melolabial fold**,[*[clarification needed](https://en.wikipedia.org/wiki/Wikipedia:Please_clarify)*] [4] or the lip-cheek fold or groove.[5] It is also known as the **nasolabial sulcus**.

## Cosmetology

With [ageing](/source/Ageing) the fold may grow in length and depth.[6] [Dermal fillings](/source/Injectable_filler) may be used to replace lost fats and [collagen](/source/Collagen) in this facial area.[7]

## See also

- [Epicanthal fold](/source/Epicanthal_fold)

- [Nasalis muscle](/source/Nasalis_muscle)

- [Marionette lines](/source/Marionette_lines)

## References

1. **[^](#cite_ref-1)** Burgess, Cheryl M., ed. (2005). [*Cosmetic Dermatology*](https://books.google.com/books?id=kJNOY2sLxIoC&pg=PA106). Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg. p. 106. [ISBN](/source/ISBN_(identifier)) [9783540273332](https://en.wikipedia.org/wiki/Special:BookSources/9783540273332). Retrieved 20 February 2015.

1. **[^](#cite_ref-2)** Vennemeyer M. D., Michael D (22 December 2010). [*Plastic Surgery Myths Dispelled*](https://books.google.com/books?id=V-9e6vSj6ZkC&pg=PA35). Xlibris Corporation. p. 35. [ISBN](/source/ISBN_(identifier)) [9781456835958](https://en.wikipedia.org/wiki/Special:BookSources/9781456835958). Retrieved 20 February 2015.

1. **[^](#cite_ref-3)** Pogrel, MA; Shariati, S; Schmidt, B; Faal, ZH; Regizi, J (1998). "The surgical anatomy of the nasolabial fold". *Oral Surg Oral Med Oral Pathol Oral Radiol Endod*. **86** (4): 410–5. [doi](/source/Doi_(identifier)):[10.1016/s1079-2104(98)90365-1](https://doi.org/10.1016%2Fs1079-2104%2898%2990365-1). [PMID](/source/PMID_(identifier)) [9798223](https://pubmed.ncbi.nlm.nih.gov/9798223).

1. **[^](#cite_ref-4)** [Why Do Nasolabial Folds Appear? Exploring the Anatomical Perspectives and the Role of Thread-Based Interventions](https://www.mdpi.com/2075-4418/14/7/716), [doi](/source/Doi_(identifier)):[10.3390/diagnostics14070716](https://doi.org/10.3390%2Fdiagnostics14070716)

1. **[^](#cite_ref-5)** [The Lip-Cheek Groove: A New Analysis With Treatment Options](https://www.liebertpub.com/doi/10.1001/archfaci.8.5.324), [doi](/source/Doi_(identifier)):[10.1001/archfaci.8.5.324](https://doi.org/10.1001%2Farchfaci.8.5.324)

1. **[^](#cite_ref-Wulc_6-0)** Wulc, Allan E.; Sharma, Pooja; Czyz, Craig N. (2010). "The Anatomic Basis of Midfacial Aging". *Midfacial Rejuvenation*. pp. 15–28. [doi](/source/Doi_(identifier)):[10.1007/978-1-4614-1007-2_2](https://doi.org/10.1007%2F978-1-4614-1007-2_2). [ISBN](/source/ISBN_(identifier)) [978-1-4614-1006-5](https://en.wikipedia.org/wiki/Special:BookSources/978-1-4614-1006-5).

1. **[^](#cite_ref-7)** ["Why your face ages and what you can do"](https://www.health.harvard.edu/healthbeat/why-your-face-ages-and-what-you-can-do). *www.health.harvard.edu/*. Harvard Health Publications. 14 September 2010. Retrieved 23 February 2015.

v t e Human surface anatomy and general regions Head Marionette lines Nasolabial fold Philtrum Commissure of lips Vermilion border Glabella Brow ridge Nostril Nose Neck Triangles: Anterior Muscular Carotid Submandibular Submental Posterior Occipital Subclavian Suboccipital Supraclavicular fossa Thorax Triangle of auscultation Clavipectoral triangle Inframammary fold Infraclavicular fossa Arm Cubital fossa Anatomical snuffbox Abdomen/pelvis regions Epigastrium Hypochondrium Umbilical region Flank Hypogastrium Inguinal region Quadrants Lumbar triangle McBurney's point Desjardins' point Traube's space Perineal Anal triangle Urogenital triangle Leg Buttocks Gluteal sulcus Intergluteal cleft Femoral triangle Popliteal fossa Lap

Authority control databases Terminologia Anatomica

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Adapted from the Wikipedia article [Nasolabial fold](https://en.wikipedia.org/wiki/Nasolabial_fold) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Nasolabial_fold?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.