Humectants are often used in so - called " oil - free moisturizers " 这就是保湿霜所做的事情。
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Humectants trap water and plump up the stratum corneum , making it softer and smoother without adding oiliness or shine 湿润剂吸收水分，使角质层膨胀，使之柔软光滑并且不会带来油腻腻的光泽。
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The second group of ingredients are humectants , which attract and hold water in the stratum corneum 当你刚刚洗完澡的时候，皮肤的角质层都是湿润的，但是不会保持很久因为水分很快就蒸发到周围的空气中。
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How it works : honey is a natural humectant , which makes it the perfect ingredient to help dry patches ( honey - based products may be too rich for acne - prone skin ) 作用：蜂蜜是一种天然的湿润剂，是护理干燥皮肤的上等护肤品(对于易长粉刺的皮肤蜂蜜产品就太油了。
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If you need moisturizing , choose an oil - free moisturizer that contains humectants such as glycerin , na - pca and hyaluronic acid , et cetera ( see ingredients table in the feature article of cosmetics ) 如果你需要保湿，可以选择含有甘油，羧基酸，透明质酸等湿润剂的无油产品。
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The result showed that the factors such as the dosage of gynostemma pentaphyllm extract powder , sweetener , freshener , and humectants concentration had substantial influence on the quality of buccal tablet 结果表明，绞股蓝浸膏粉、甜味剂、清凉剂的用量及润湿剂的浓度等因素对口含片的质量有较大影响。
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A natural humectant , good for soothing fine lines ; ability to neutralize the skin and help get rid of harmful substances ; relaxing to the inflammed skin and has mild uv protecting factor 含高量保湿因子，可以防止皮肤水分散，帮助失抚平细纹；亦可净化皮肤的污染物，使肤质透明、洁净；防止紫外线和外部刺激引起皮肤氧化，镇静皮肤炎症。
