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Review
. 2024 May;23(5):1518-1526.
doi: 10.1111/jocd.16155. Epub 2024 Feb 26.

Skin homeostasis: Mechanism and influencing factors

Qian Jiao  1 , Leilei Zhi  2 , Bing You  2 , Gaixiang Wang  2 , Nan Wu  2 , Yan Jia  1
Affiliations
Review

Skin homeostasis: Mechanism and influencing factors

Qian Jiao et al. J Cosmet Dermatol. 2024 May.

Abstract

Background: The skin is the largest organ in the human body, not only resisting the invasion of harmful substances, but also preventing the loss of moisture and nutrients. Maintaining skin homeostasis is a prerequisite for the proper functioning of the body. Any damage to the skin can lead to a decrease in local homeostasis, such as ultraviolet radiation, seasonal changes, and air pollution, which can damage the skin tissue and affect the function of the skin barrier.

Objective: This article reviews the maintenance mechanism and influencing factors of skin homeostasis and the symptoms of homeostasis imbalance.

Methods: We searched for articles published between 1990 and 2022 in English and Chinese using PubMed, Web of Science, CNKI, and other databases in the subject area of dermatology, using the following search terms in various combinations: "skin homeostasis," "skin barrier," and "unstable skin." Based on our results, we further refined our search criteria to include a series of common skin problems caused by the destruction of skin homeostasis and its treatments. Limitations include the lack of research on dermatological and cosmetic problems triggered by the disruption of skin homeostasis.

Results: This study describes the neuroendocrine-immune system, skin barrier structure, and skin metabolic system that maintain skin homeostasis. In addition, we discuss several common symptoms that occur when skin homeostasis is out of balance, such as dryness, redness, acne, sensitivity, and aging, and explain the mechanism of these symptoms.

Conclusion: This article provides an update and review for students and practitioners, and provides a theoretical basis for the development of skin care products for the maintenance and repair of skin homeostasis.

Keywords: keratinocyte; lipid; microorganisms; skin barrier.

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References

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