PLOS ONE:SPF保湿霜在面部和眼睑区域的覆盖率不如防晒霜

2019-04-05 海北 MedSci原创

许多保湿霜含有与防晒霜相同的防晒因子(SPF)。然而,在所获得的覆盖范围和所提供的保护方面,目前还缺乏对SPF保湿剂应用与防晒剂相比的研究。

许多保湿霜含有与防晒霜相同的防晒因子(SPF)。然而,在所获得的覆盖范围和所提供的保护方面,目前还缺乏对SPF保湿剂应用与防晒剂相比的研究。

之前,研究人员证明了在常规防晒霜应用期间,用户不完全覆盖他们的眼睑区域。最近,其进行的另一项研究的目的是确定SPF保湿用户是否也表现出这些趋势。

研究人员将84名参与者(22名男性,62名女性,18-57岁)的研究人群暴露于紫外线辐射,并使用安装在三脚架上的紫外线敏感数码单反相机进行两次不同的访问。

在访问第一次时,在施用SPF30防晒剂或保湿剂之前和之后获得图像,然后在访问第二次时,用另一种制剂重复该研究。处理图像用于面部地标识别,然后对色调饱和度值进行分段映射,以识别未被覆盖的面部区域。

分析显示,在整个面部缺失的区域中,保湿剂的使用明显比防晒剂差(防晒剂错过11.1%,而SPF保湿剂则为16.6%,配对t检验p <0.001)。这种差异主要是由于眼睑区域的覆盖率降低(防晒霜错过14.0%,保湿剂20.9%,p <0.001)。

对研究后调查问卷的分析显示,参与者不知道他们的不完整报道。二次分析显示,男性的覆盖率有所提高(p = 0.05),而且仅在使用保湿剂,肤色较深的参与者中(p = 0.02)。

这些数据一起表明,尽管在增加保湿剂使用频率方面具有潜在优势,但具有较高癌症风险的面部区域可能不受保护,并且参与者不知道他们处于危险之中。因此,应该促进替代的防晒战略。


原始出处:

Lourenco EAJ et al. Application of SPF moisturisers is inferior to sunscreens in coverage of facial and eyelid regions. PLOS ONE, 2019; doi: 10.1371/journal.pone.0212548. eCollection 2019.


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