Non-invasive assessment of skin hydration and sensation with diffuse reflectance spectroscopy

The skin is a vital organ in the human body, providing essential functions such as protection, sensation, and metabolism. Skin hydration is one of the crucial factors in maintaining normal skin function. Insufficient skin hydration can lead to dryness, shedding of the stratum corneum, a decrease in...

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Bibliographic Details
Published in:Scientific reports 2023-11, Vol.13 (1), p.20149-20149, Article 20149
Main Authors: Chen, Ying-Yu, Tzeng, Shih-Yu, Yen, Yun-Yo, Cheng, Nan-Yu, Tseng, Sheng-Hao
Format: Article
Language:English
Subjects:
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639/624
639/624/1075
Absorption
Body Water - metabolism
Capacitance
Correlation coefficient
Health promotion
Humanities and Social Sciences
Humans
Hydration
Invasiveness
multidisciplinary
Reflectance
Scattering coefficient
Science
Science (multidisciplinary)
Sensation
Skin
Skin - metabolism
Skin Absorption
Spectroscopy
Spectrum Analysis
Stratum corneum
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Summary:The skin is a vital organ in the human body, providing essential functions such as protection, sensation, and metabolism. Skin hydration is one of the crucial factors in maintaining normal skin function. Insufficient skin hydration can lead to dryness, shedding of the stratum corneum, a decrease in skin barrier function, and may cause skin inflammation. Therefore, maintaining or improving skin hydration is critical in promoting healthy skin. Currently, the commonly used method for measuring skin hydration is bioelectrical capacitance analysis, which is often affected by environmental humidity and can only provide limited information. To overcome these limitations, this study used diffuse reflectance spectroscopy (DRS) in the wavelength range of 400-1000 nm to quantify skin absorption and scattering modulation caused by changes in skin hydration states. The advantages of this technique include rapid measurements, non-invasiveness, a straightforward optical setup, and suitability for prolonged skin monitoring. We found that DRS-derived skin absorption coefficients had a correlation coefficient of 0.93 with the skin capacitance at various skin hydration states. In addition, our findings reveal that absorption and scattering coefficients may be useful in discerning skin hydration enhancement induced by applying soaked cotton pads or cosmeceutical facial masks, as well as evaluating skin sensation. This study verifies that the DRS method could be a convenient and effective tool for evaluating skin hydration related information.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-47349-5