The Effect of Sun Tan Lotion on Skin By Using Skin TEWL and Skin Water Content Measurements
Xiao, P. and Chen, D. (2022). The Effect of Sun Tan Lotion on Skin By Using Skin TEWL and Skin Water Content Measurements. MDPI Sensors. 22.
|Authors||Xiao, P. and Chen, D.|
Stratum corneum (SC) is the outermost skin layer. SC hydration is important for its cos-7 metic properties and barrier function. SC trans-epidermal water loss (TEWL) measurements and skin water content measurements are two key indexes used for SC characterization. The instrument stability and accuracy are vitally important when measuring small changes. In this paper, we present our latest study on the effect of sun tan lotion on skin by using skin TEWL and skin water content measurements. We have developed techniques to improve the measurement stability and to visualize small changes, as well as developed Machine Learning algorithms for processing the skin capacitive images. The overall results show that TEWL and skin water content measurements are capable of measuring the subtle changes of skin conditions due to the application of sun tan lotions. The results show that the TEWL values decreased after the sun tan lotion application. The sun tan lotion with SPF 20 has the lowest decrease, whilst the sun tan loon with SPF 50+ has the highest decrease. The results also show that the skin water content increased after the sun tan lotion application, with SPF 20 has the highest increase, whilst SPF 50+ has the lowest increase.
|Keywords||capacitive imaging; machine learning; skin water content; sun tan lotions; trans-epidermal water loss|
|Web address (URL)||https://www.mdpi.com/journal/sensors|
|Publication process dates|
|Accepted||07 May 2022|
|Deposited||09 May 2022|
|Accepted author manuscript|
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