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Cosmetic effectiveness of topically applied hydrolysed keratin peptides and lipids derived from wool.

机译:局部应用的水解角蛋白肽和羊毛脂的美容效果。

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摘要

BACKGROUND/PURPOSE: Skin moisturisation, elasticity, feel and appearance can all be improved through the topical application of protein hydrolysates. Recent studies suggest that supplementing intercellular lipids of the stratum corneum can enhance the functioning of the skin. METHODS: In this study, a hydrolysed keratin peptide (molecular weight <1000 Da) was prepared from wool and tested on skin in two different formulations: an aqueous solution and an internal wool lipids (IWL) liposome suspension. In vivo long-term studies were performed to evaluate the water barrier function of the skin after topical application of different formulations. During the treatment period, hydration and elasticity were determined. A sorption-desorption test was also performed to assess the hygroscopic properties and water-holding capacity of the different treated skin sites. RESULTS: Significant differences were found between the control and treated sites, with the treated areas showing an increase in hydration and elasticity as a result of keratin peptide application. Measurements also indicated that the keratin formulations reinforce the skin barrier integrity, improving its water-holding capacity. CONCLUSION: A combination of the keratin peptide with the IWL showed beneficial effects, indicating that this combination is suitable for designing new cosmetics products.
机译:背景/目的:可以通过局部应用蛋白质水解产物来改善皮肤的保湿,弹性,感觉和外观。最近的研究表明补充角质层的细胞间脂质可以增强皮肤的功能。方法:在这项研究中,从羊毛制备了水解的角蛋白肽(分子量<1000 Da),并在皮肤上以两种不同的制剂进行了测试:水溶液和内部脂质(IWL)脂质体悬浮液。在局部应用不同制剂后,进行了体内长期研究以评估皮肤的防水功能。在治疗期间,确定水合作用和弹性。还进行了吸附-解吸测试,以评估不同处理皮肤部位的吸湿性和持水能力。结果:在对照部位和治疗部位之间发现了显着差异,由于使用了角蛋白肽,治疗部位的水合作用和弹性增加。测量结果还表明,角蛋白配方可增强皮肤屏障的完整性,从而提高其保水能力。结论:角蛋白肽与IWL的组合显示出有益的作用,表明该组合适合设计新的化妆品。

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