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Skin Erythema, Pigmentation and Hydration Kinetics after Ultraviolet Radiation‐induced Photodamage in Southern Chinese Women
Author(s) -
Wan Miaojian,
Hu Rong,
Xie Xiaoyuan,
Gong Zijian,
Yi Jinling,
Chen Haiyan,
Xie Lin,
Guan Xiaomin,
Guan Lei,
Lai Wei
Publication year - 2017
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12752
Subject(s) - erythema , ultraviolet radiation , dermatology , ultraviolet , kinetics , ultraviolet irradiation , chemistry , irradiation , photochemistry , medicine , optoelectronics , materials science , physics , radiochemistry , nuclear physics , quantum mechanics
Abstract Although there have been some studies about changes of skin erythema and pigmentation following ultraviolet radiation in other races, the relevant data in Chinese have never been achieved. Thus, we evaluated the long‐time course of skin erythema, pigmentation and hydration changes after different doses of solar‐simulated ultraviolet ( SSUV ) irradiation in 26 Chinese women for 168 days. The erythema index increased abruptly and peaked during 3 days of SSUV exposure, then slowly returned to the baseline level starting at day 7 and completely recovered during 168‐day course of this study only in one minimal erythema doses ( MED ) SSUV irradiation. The melanin index started to slowly increase at day 3 of SSUV exposure, peaking at day 14 and gradually returned to the baseline level thereafter, but did not return to the baseline level during 168‐day course in all doses. Skin hydration slowly declined at day 3 of exposure, hitting the lowest point at day 7, then slowly recovered starting at day 14 and completely returned to the baseline level at day 28 only in 1.5 MED . These results will serve as baseline data on Chinese skin and provide useful references for the treatment of serious skin photodamage in Chinese.