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KMID : 0984920160180010083
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Journal of Skin Barrier Research
2016 Volume.18 No. 1 p.83 ~ p.83
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Skin Function Measurement in Use
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Kim Hyun-Jung
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Abstract
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While there are tremendous number of cosmetic products (a.k.a barrier creams) whose major claims include improving the skin barrier function, limited number of methods (or apparatus) can provide objective and reliable data about the skin barrier function. For an appropriate utilization of apparatus and adequate interpretation of the data, understanding of the underlying theory and measurement protocols is mandatory. In this review, non-invasive measurement of skin functions, including trans-epidermal water loss (TEWL), skin surface hydration, skin surface pH, and skin surface lipid, will be briefly discussed.
TEWL, as a representation of skin`s permeability barrier function, is commonly measured by three types of probes - open chamber, closed chamber, and condenser chamber type probes. Turbulence time is a critical issue for obtaining the proper result. Skin hydration can be evaluated by measuring electrical properties of stratum corneum (conductance or capacitance). Skin surface pH is very important in various skin disease such as atopic dermatitis. Finally we will cover the sebum measurement which is an essential point in acne.
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KEYWORD
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TEWL (cf. Skin surface water loss: SSWL), Skin hydration, Skin surface pH, Sebum, Atopic dermatitis, Acne
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