Pearl Weena Marie E. Sabido, Lonabel A. Encarnacion, Natividad Sandra D. Chua, Eleonor B. Asuncion, Katrina Carmina Y. Nisce-Anisco, Mary Elizabeth S. Danga, Lei Anne R. Hernandez,
Nicola N. Valbuena Related Institution
Background. Green tea, from the leaves of Camellia sinensis, is a rich source of polyphenols, especially (-)-epigallocatechin-3-gallate (EGCG). It has antioxidant, anti-inflammatory, antimicrobial, and anti-tumor properties, and is believed to have potential for various dermatological applications.
Objectives. This paper aims to assess the effects of green tea or its components on the prevention or treatment of dermatologic conditions among Filipinos.
Methods. This is a systematic review of randomized controlled trials involving any form of green tea or its components as prevention or treatment of any dermatologic condition among Filipinos. Searching through electronic databases, reference lists of previous studies or reviews, and physical archives was done. At least two review authors independently applied the study criteria, extracted data and assessed methodological quality of studies. Discrepancies were resolved by discussion or by consulting a third review author. Study authors were contacted for missing information.
Results. Three published and 1 unpublished study with 252 participants, completed from 2003 to 2009, were reviewed. Each investigated the effects of green tea on different dermatological applications: namely, photoprotection, molluscum contagiosum, seborrheic dermatitis, and acne vulgaris. Each of these studies was of high methodological quality. As each of them investigated different dermatological conditions, results were summarized descriptively according to dermatological condition.
Conclusion. There is limited to moderate evidence of regarding the effects of green tea on the prevention or treatment of the above conditions. This is primarily because only one study per dermatological condition was reviewed. However, as there is generally a trend to benefit with its topical use, and because it has thus far proven to be generally safe and well tolerated, its use as an adjunct in the prevention or treatment of the above conditions may be recommended.
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