Green tea and skin.
OBJECTIVE
To discuss the current knowledge of polyphenolic compounds present in green tea as anti-inflammatory, antioxidant, and anticarcinogenic in skin.


METHODS
References identified from bibliographies of pertinent articles, including our work in related fields.


METHODS
Articles were selected based on the use of green tea or its polyphenolic constituents for prevention against inflammation and cancer in the skin. Also discussed is the possible use of green tea to treat various inflammatory dermatoses.


RESULTS
The polyphenolic compounds from green tea were tested against chemical carcinogenesis and photocarcinogenesis in murine skin. These green tea polyphenols were found to afford protection against chemical carcinogenesis as well as photocarcinogenesis in mouse skin. A few experimental studies were conducted in human skin in our laboratory. Analysis of published studies demonstrates that green tea polyphenols have anti-inflammatory and anticarcinogenic properties. These effects appear to correlate with antioxidant properties of green tea polyphenols.


CONCLUSIONS
The outcome of the several experimental studies suggests that green tea possess anti-inflammatory and anticarcinogenic potential, which can be exploited against a variety of skin disorders. Although more clinical studies are needed, supplementation of skin care products with green tea may have a profound impact on various skin disorders in the years to come. Arch Dermatol. 2000;136:989-994
Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, USA.
S K
SK
Katiyar
N
N
Ahmad
H
H
Mukhtar
D000284:Administration, Oral; D000287:Administration, Topical; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use; D016588:Anticarcinogenic Agents / Q000627:therapeutic use; D000975:Antioxidants / Q000627:therapeutic use; D003358:Cosmetics; D005419:Flavonoids; D006801:Humans; D010636:Phenols / Q000008:administration & dosage / Q000627:therapeutic use*; D008517:Phytotherapy; D011108:Polymers / Q000008:administration & dosage / Q000627:therapeutic use*; D059808:Polyphenols; D012871:Skin Diseases / Q000517:prevention & control*; D013662:Tea / Q000627:therapeutic use*
D000893:Anti-Inflammatory Agents; D016588:Anticarcinogenic Agents; D000975:Antioxidants; D003358:Cosmetics; D005419:Flavonoids; D010636:Phenols; D011108:Polymers; D059808:Polyphenols; D013662:Tea