Dual Effects of Alpha-Hydroxy Acids on the Skin

AHAs are organic acids with one hydroxyl group attached to the alpha position of the acid. AHAs including glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid are often used extensively in cosmetic formulations. AHAs have been used as superficial peeling agents as well as to amelio...

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Main Authors: Sheau-Chung Tang, Jen-Hung Yang
Format: Article
Language:English
Published: MDPI AG 2018-04-01
Series:Molecules
Subjects:
Online Access:http://www.mdpi.com/1420-3049/23/4/863
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author Sheau-Chung Tang
Jen-Hung Yang
author_facet Sheau-Chung Tang
Jen-Hung Yang
author_sort Sheau-Chung Tang
collection DOAJ
description AHAs are organic acids with one hydroxyl group attached to the alpha position of the acid. AHAs including glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid are often used extensively in cosmetic formulations. AHAs have been used as superficial peeling agents as well as to ameliorate the appearance of keratoses and acne in dermatology. However, caution should be exercised in relation to certain adverse reactions among patients using products with AHAs, including swelling, burning, and pruritus. Whether AHAs enhance or decrease photo damage of the skin remains unclear, compelling us to ask the question, is AHA a friend or a foe of the skin? The aim of this manuscript is to review the various biological effects and mechanisms of AHAs on human keratinocytes and in an animal model. We conclude that whether AHA is a friend or foe of human skin depends on its concentration. These mechanisms of AHAs are currently well understood, aiding the development of novel approaches for the prevention of UV-induced skin damage.
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spelling doaj.art-218cb6f98e5f4086b7f2845b855459e52022-12-22T01:48:09ZengMDPI AGMolecules1420-30492018-04-0123486310.3390/molecules23040863molecules23040863Dual Effects of Alpha-Hydroxy Acids on the SkinSheau-Chung Tang0Jen-Hung Yang1Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien 97004, TaiwanDepartment of Biochemistry, School of Medicine, Tzu Chi University, Hualien 97004, TaiwanAHAs are organic acids with one hydroxyl group attached to the alpha position of the acid. AHAs including glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid are often used extensively in cosmetic formulations. AHAs have been used as superficial peeling agents as well as to ameliorate the appearance of keratoses and acne in dermatology. However, caution should be exercised in relation to certain adverse reactions among patients using products with AHAs, including swelling, burning, and pruritus. Whether AHAs enhance or decrease photo damage of the skin remains unclear, compelling us to ask the question, is AHA a friend or a foe of the skin? The aim of this manuscript is to review the various biological effects and mechanisms of AHAs on human keratinocytes and in an animal model. We conclude that whether AHA is a friend or foe of human skin depends on its concentration. These mechanisms of AHAs are currently well understood, aiding the development of novel approaches for the prevention of UV-induced skin damage.http://www.mdpi.com/1420-3049/23/4/863alpha-hydroxy acidsUVBapoptosiskeratinocyteglycolic acid
spellingShingle Sheau-Chung Tang
Jen-Hung Yang
Dual Effects of Alpha-Hydroxy Acids on the Skin
Molecules
alpha-hydroxy acids
UVB
apoptosis
keratinocyte
glycolic acid
title Dual Effects of Alpha-Hydroxy Acids on the Skin
title_full Dual Effects of Alpha-Hydroxy Acids on the Skin
title_fullStr Dual Effects of Alpha-Hydroxy Acids on the Skin
title_full_unstemmed Dual Effects of Alpha-Hydroxy Acids on the Skin
title_short Dual Effects of Alpha-Hydroxy Acids on the Skin
title_sort dual effects of alpha hydroxy acids on the skin
topic alpha-hydroxy acids
UVB
apoptosis
keratinocyte
glycolic acid
url http://www.mdpi.com/1420-3049/23/4/863
work_keys_str_mv AT sheauchungtang dualeffectsofalphahydroxyacidsontheskin
AT jenhungyang dualeffectsofalphahydroxyacidsontheskin