Effects of seasonality and a daily photo-protection upon some facial signs of Chinese women.
INTERNATIONAL JOURNAL OF COSMETIC SCIENCE(2017)
摘要
ObjectivesThese were two-fold: (i) to record through standardized pictures, the possible changes in 31 facial signs induced, in a 6-month period, by the periodical shift from winter to summer in a group of 43 Chinese women and (ii) to appraise the preventive effects of a strong photo-protective product, daily applied to the faces of an additional group (N = 40) of women of same age-range and presenting same severities of facial signs in winter. MethodsFacial signs (structural and pigmentation-related) were scored in blind by a panel of 12 experts from photographs taken under standard conditions. Scorings were performed under specific scales as established by a previously published referential Skin Aging Atlas, Volume 2, Asian Type. ResultsA significant seasonal impact was found for more than 60% of facial signs, that is presenting a higher severity in summer in the unprotected group. Some changes are of a low or subtle extent, whereas some others show significant amplitudes. The latter comprise eight signs, among the 31, that became, far above scoring threshold, indeed affected during this 6-month period. The observed changes in six of these eight signs, in majority related to pigmentation, appeared efficiently alleviated in the photo-protected group. ConclusionThe shift from winter to summer exposure is confirmed in altering some facial pigmented signs among Chinese women. Such changes appear much alleviated by a daily strong photo-protective regimen.
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关键词
clinical,daily solar exposure,facial ageing,photo-protection,season,UV
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