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http://dx.doi.org/10.15230/SCSK.2018.44.4.455

Study on Skin Elasticity Property between Face and Forearm according to the Environmental Change of Stratum Corneum  

Chang, Minyoul (Division of Cosmetics, Seowon University, Global Skin Research Center)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.44, no.4, 2018 , pp. 455-463 More about this Journal
Abstract
Skin elasticity has been known to be influenced by the change of dermal components such as collagen, elastic fiber, and glycosaminoglycans. However, it is unclear whether the uppermost epidermis may affect the mechanical characteristics of elasticity. In present study we tried to find the role of stratum corneum when determining the elastic property under skin bioengineering measurement with $Cutometer^{(R)}$. A total of 10 healthy volunteers aged 25-40 years were investigated by the parameters reflecting the skin elasticity from face and volar forearm. Within various ranges of suction pressure, R0 (=Uf), R7 (=Ur/Uf) and R8 (=Ua) were obtained to explore the depth-associated elasticity. In addition, these parameters were re-measured after the skin was fully hydrated. As results, we found that the measurement of depth-associated elasticity was possible as using various suction pressure. And the R7 parameter was significantly lower from face than those from forearm in before hydration (p < 0.05). Also, we found that the hydration of stratum corneum could affect skin elasticity. Especially, the R7 parameter at 300 mbar suction pressure of face skin showed significantly increased values than that of before hydration (p < 0.05). Interestingly, measured data from the face before and after hydration manifested relatively higher variation than from the forearm. These results suggest that it is possible to evaluate the skin elasticity considering the changes of stratum corneum and epidermis by using various suction pressure and skin hydration.
Keywords
skin elasticity; stratum corneum; skin hydration; $Cutometer^{(R)}$; suction pressure; face skin; forearm skin;
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