Usimply舒膚莉。無添加 無香氛

夏日肌養保養最麻吉--綠茶添加

        喝綠茶有益健康，連皮膚擦上含綠茶成分的保養品也能讓肌膚更年輕美麗，你知道為什麼嗎？

    根據美國明尼蘇達州立大學的Dr. Zigang Dong教授指導的研究實驗顯示，茶葉中的多酚化合物可以預防紫外線UVB對細胞的破壞作用，同時阻斷正常細胞因為UVB的作用產生癌變的反應。Dr. Dong的研究小組認為，對於需要長時間曝曬於陽光或有較多紫外線環境下的人，在保養品中添加綠茶萃取成分並局部使用在皮膚上，可以達到減少日光性皮膚損傷，有助於降低皮膚癌的罹患率。實驗結果於2003年9月8日發表於美國化學學會。

      茶葉中不論是綠茶、紅茶或白茶都富含多酚化合物（polyphenols），這是自然界植物中所含最有效的抗氧化成分之一。美國光化學與光生物學雜誌指出，多酚類是綠茶中的活性成分，此成分具有抗氧化、抗發炎和抗癌的特性，可以避免紫外線所造成的皮膚免疫力低下。

什麼保養品有添加綠茶萃取呢？

Usimply舒膚莉的明星商品：左旋C極致亮白淡斑精華、左旋C極致亮白淡斑面膜都含有綠茶萃取(Camellia Sinensis)哦！

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用途:
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用途：
◆含高濃度微脂囊維他命C，可有效淡化黑色素、斑點。
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◆珍貴植物萃取如胡蘿蔔素、積雪草、綠茶、辣木油可以改善暗沉，維持肌膚的光滑彈性。
◆多重保濕因子：玻尿酸、維他命B5、海藻萃取等由裡到外多重保溼鎖水，瞬效保濕，全面提升肌膚的保濕度。
◆SGS檢驗合格
◆維他命C、維他命E和綠茶萃取三重抗氧化，延緩肌膚老化。
◆不含油質的清爽配方是極佳的美白修護產品。
◆無添加香料、香精、色素、酒精及Paraben類防腐劑

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參考文獻

Skincare lotion with tea polyphenols could help fight skin cancer

Researchers at the University of Minnesota in Austin are developing a new skin care lotion composed of compounds found in tea to help fight skin cancer, one of the the most commonly seen cancers in the United States. The findings were presented at the 226th national meeting of the American Chemical Society, the world's largest scientific society.

Tea contains chemicals called polyphenols that appear to block the formation of nonmelanoma skin tumors, according to the researchers. While sunblock lotion, which prevents the skin from absorbing harmful ultraviolet (UV) light, tea polyphenols work after the skin is exposed to excessive sunlight. Tea polyphenols, which are found in both black and green teas, inhibit a newly discovered chemical pathway involving an enzyme called JNK-2  that appears to play a key role in the development of tumors, according to the research team.

The research shows that from the laboratory studies using mouse models of skin cancer in which the mice were exposed to ultraviolet light, topical exposure to green tea polyphenols decreased levels of the enzyme, which in turn delays or blocks the skin's response to UV light. Similar polyphenols are also found in black tea.

Study leader Dr. Zigang Dong, M.D., a professor at the university, said  "Topical application of certain tea polyphenols appears to block a key process that leads to skin cancer." 

Other scientists have previously demonstrated that drinking tea, particularly green tea, may be effective against skin cancer. They believe that this is mainly due to tea's high level of antioxidants, which destroy free radicals that are thought to damage a cell's DNA and trigger the cancer process. But Dong feels a topical application is likely to be a better approach than drinking tea.

"Drinking tea may help, but you'd have to drink a large amount to accumulate in the skin, perhaps as many as 10 cups a day. It's easier to concentrate it in a cream form, and it's probably more effective," says Dong.

Source: Science Blog, New York Sept. 8, 2003