阳光保护因子与头发颜色差异指数之间的相关性,用于评估防晒对头发的紫外线保护有效性的新方法:一项实验研究
Jee-Hye Oh1, Go-Woon Choi1, Sung-Ha Park1
1Kolmar Korea Co., Ltd., Seoul, Republic of Korea.
概括
一种新的头发阳光保护因子 (HSPF) 方法通过评估头发颜色变化,有效地测量紫外线保护. 这种新的方法与头发护理产品的体内阳光保护因子 (SPF) 测试有很好的相关性.
科学领域:
- 理发科学 理发科学 理发科学
- 光保护研究的研究.
- 化品的有效性测试试验
背景情况:
- 评估紫外线 (UV) 对头发的保护效果至关重要.
- 现有的方法缺乏太阳保护因子 (SPF) 和紫外线引起的头发颜色变化之间的直接相关性.
- 建议使用一种新型的头发SPF (HSPF) 来量化基于头发颜色变化的紫外线损伤.
研究的目的:
- 建立一种用于评估头发紫外线保护功效的新方法.
- 为了研究SPF和UV诱导的头发颜色变化之间的关系.
- 引入和验证一个头发SPF (HSPF) 度量.
主要方法:
- 开发了一种采用UV标准样本和CIELAB色彩空间的体外方法,以基于ΔE值创建HSPF标准曲线.
- 通过将它们的HSPF与标准曲线进行比较,评估了护发配方 (油,精华,护理剂) 的紫外线保护.
- 验证了体外方法与体内SPF测试 (ISO 24444) 与人类参与者的相比.
主要成果:
- 更高的SPF产品显示减少了头发颜色的色 (较小的DE值).
- 实验室HSPF值与体内SPF值有很强的相关性,特别是油和护肤品 (R2 = 0.734).
- 含水量高的配方在体外和体内结果之间的相关性较弱.
结论:
- 开发的HSPF为评估头发紫外线保护提供了一个新的指标.
- 在未来开发和对紫外线保护头发产品的有效性测试方面,HSPF显示出前景.
- 这种方法为了解和量化紫外线对头发的损害提供了有价值的工具.
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