Skin Care and Treatments of Melbourne Dermatology - Green Tea (Camellia Sinensis) Polyphenolic Antioxidants and Skin Photoprotection

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Green Tea (Camellia Sinensis) Polyphenolic Antioxidants and Skin Photoprotection

Green Tea (Camellia Sinensis) Polyphenolic Antioxidants and Skin Photoprotection

Green tea is consumed as a popular beverage worldwide particularly in Asian countries like China, Korea, Japan and India.

It contains polyphenolic compounds also known as epicatechins, which are antioxidant in nature.

Many laboratories have shown that topical treatment or oral consumption of green tea polyphenols inhibits chemical carcinogen- or ultraviolet radiation-induced skin tumorigenesis in different animal models.

Studies have shown that green tea extract also possesses anti-inflammatory activity.

These anti-inflammatory and anti-carcinogenic properties of green tea are due to their polyphenolic constituents present therein.

The major and most chemopreventive constituent in green tea responsible for these biochemical or pharmacological effects is epigallocatechin-3-gallate (EGCG).

Understanding the molecular mechanisms of these effects of green tea is a subject of investigation in many laboratories.

Treatment of green tea polyphenols to skin has been shown to modulate the biochemical pathways involved in inflammatory responses, cell proliferation and responses of chemical tumor promoters as well as ultraviolet (UV) light-induced inflammatory markers of skin inflammation.

Topical treatment with EGCG on mouse skin also results in prevention of UVB-induced immunosuppression, and oxidative stress.

The photoprotective effects of green tea treatment on human skin either topically or consumed orally against UV light-induced inflammatory or carcinogenic responses are not well understood.

Based on documented extensive beneficial effects of green tea on mouse skin models and very little in human skin, many pharmaceutical and cosmetic companies are supplementing their skin care products with green tea extracts.

Related Skin Care Information, Products and Expert Discussions

Skin photoprotection by green tea: antioxidant and immunomodulatory effects

Dr. Albert Laporte

Green tea polyphenol (—)-epigallocatechin-3-gallate treatment of human skin inhibits ultraviolet radiation-induced oxidative stress

Cosmetic Dermatology Newsletter Summer 2007

Photoprotective effects of green tea polyphenols


Skin Care: July 2007 :

Bungling Avobenzone : Ascorbic Acid vs. Ascorbyl Palmitate — The Primary Antioxidant/Firming Quandry (2007) : Result: Jan Marini Age Intervention Eye Cream : PhytoMelanin™ Augments Revised Jan Marini Antioxidant Daily Face Protectant SPF 30 Formula : What is PhytoMelanin™? : Claimed Additional Benefit of New Jan Marini SPF 30 Formula : New Higher Strength Azelaic Acid Formulation Available : Quack: Chiral Skin Care by Charlatans : New Jan Marini Age Intervention Hair : SK-II with "Pitera" : Strivectin Review : Improving Results from Skinceuticals Corrective Moisturizers and Antioxidant Serums while Reducing Use : Combining Jan Marini C-ESTA with Gernetic Myo/Myoso : Topical L-Ascorbic Acid: Percutaneous Absorption Studies (Dermatol Surg. 2001;27:137-142) : Green Tea (Camellia Sinensis) Polyphenolic Antioxidants and Skin Photoprotection : Milk Thistle : Brown Patches (Upper Lip Region) — Hyperpigmentation Treatment : Jan Marini Age Intervention Hair for Alopecia Universalis : New: Darphin Azahar Cleansing Micellar Water (for Sensitive Skin) : Sovage Idebenol Facial Antioxidant Cream — 0% Idebenone : Jan Marini Skin Zyme Mask with/without Clean Zyme Cleanser : Caution Regarding Melanotan : Alternative to Jan Marini Bioglycolic Eye Cream : X-Uidl [Thornley] :


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