Time course of occlusive effects on skin evaluated by measurement of transepidermal water loss (TEWL) Including patch tests with sodium lauryl sulphate and water

1993 ◽  
Vol 28 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Tove Agner ◽  
Jorgen Serup
Keyword(s):  
Water Loss ◽  
Time Course ◽  
Transepidermal Water Loss ◽  
Sodium Lauryl Sulphate ◽  
Patch Tests

Baseline transepidermal water loss (TEWL) as a prediction of susceptibility to sodium lauryl sulphate

1989 ◽  
Vol 20 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Ron A. Tupker ◽  
Pieter-Jan Coenraads ◽  
Jaliya Pinnagoda ◽  
Johan P. Nater
Keyword(s):  
Water Loss ◽  
Transepidermal Water Loss ◽  
Sodium Lauryl Sulphate

The examination of biophysical parameters of skin (transepidermal water loss, skin hydration and pH value) in different body regions of ponies

2012 ◽  
Vol 15 (3) ◽  
pp. 553-559 ◽  
Author(s):  
M.P. Szczepanik ◽  
P.M. Wilkołek ◽  
M. Pluta ◽  
Ł.R. Adamek ◽  
Z.J.H. Pomorski
Keyword(s):  
Water Loss ◽  
Ph Value ◽  
Neck Region ◽  
Transepidermal Water Loss ◽  
Skin Hydration ◽  
Lumbar Region ◽  
Biophysical Parameters ◽  
Body Regions ◽  
Skin Ph

Abstract The purpose of this study was to evaluate transepidermal water loss, skin hydration and skin pH in normal ponies. Sixteen ponies of both sexes were examined in the study. Measurements were taken from seven different sites: the neck region, the shoulder, thorax, lumbar, inguinal, lip region and the auricle. In each of the regions transepidermal water loss (TEWL), skin hydration and skin pH were measured. For transepidermal water loss, the lowest values were observed in the lumbar region (9.71g/hm2), while the highest values were observed in the lip region (22.35 g/hm2). In the case of skin hydration the lowest values were observed for the thorax region (2.13 CU), and the highest for the lip region (41.81 CU). For skin pH, the lowest results were obtained in the lumbar region (6.93), and the highest in the lip region (7.96).

scholarly journals Monitoring Transepidermal Water Loss and Skin Wettedness Factor with Battery-Free NFC Sensor

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5549
Author(s):  
Syed Muhammad Ali ◽  
Wan-Young Chung
Keyword(s):  
Water Loss ◽  
Near Field ◽  
Experimental Tests ◽  
Transepidermal Water Loss ◽  
Comfort Level ◽  
Skin Wettedness ◽  
Moisture Content Level ◽  
Indoor And Outdoor Environments ◽  
Skin Moisture

The transepidermal water loss (TEWL) and the skin wettedness factor (SWF) are considered parts of a key perspective related to skincare. The former is used to determine the loss of water content from the stratum corneum (SC), while the latter is used to determine the human skin comfort level. Herein, we developed two novel approaches: (1) determination of the TEWL and the SWF based on a battery-free humidity sensor, and (2) the design of a battery-free smart skincare sensor device tag that can harvest energy from a near field communication (NFC)-enabled smartphone, making it a battery-free design approach. The designed skincare device tag has a diameter of 2.6 cm and could harvest energy (~3 V) from the NFC-enabled smartphone. A series of experimental tests involving the participation of eight and six subjects were conducted in vivo for the indoor and outdoor environments, respectively. During the experimental analysis, the skin moisture content level was measured at different times of the day using an android smartphone. The TEWL and SWF values were calculated based on these sensor readings. For the TEWL case: if the skin moisture is high, the TEWL is high, and if the skin moisture is low, the TEWL is low, ensuring that the skin moisture and the TEWL follow the same trend. Our smart skincare device is enclosed in a 3D flexible design print, and it is battery-free with an android application interface that is more convenient to carry outside than other commercially available battery-based devices.

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