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Baumann Skin Type in the Korean Female Population
( Sung Ku Ahn ),( Myungsoo Jun ),( Hana Bak ),( Byung Duk Park ),( Seung Phil Hong ),( Sang-Hoon Lee ),( Seong-Jin Kim ),( Hyung Joo Kim ),( Dong Hoon Song ),( Pok Kee Min ),( Ja Woong Goo ),( Tae-Hyu 대한피부과학회 2017 Annals of Dermatology Vol.29 No.5
Background: To meet the need for a subspecialized skin type system, the Baumann skin type (BST) system was proposed. Objective: To evaluate the distribution of BST types and influencing factors among Korean women. Methods: BST questionnaires were administered to 1,000 Korean women. The possible responses were as follows: oily (O) or dry (D), sensitive (S) or resistant (R), pigmented (P) or non-pigmented (N), and wrinkled (W) or tight (T). The correlations of the BST with the subjects` age, location, ultraviolet (UV) ray exposure, drinking and smoking habits, and blood type were assessed. Results: The OSNT, DSNT, DRNT, and OSNW skin types were the most common skin types (55.3%). The O, S, P, and W types accounted for 46.6%, 68.8%, 23.2%, and 31.9%, respectively. The proportion of the O and S type was the highest in Gyeongsangbuk-do (55.0%) and Seoul (77.2%). The proportion of the P and W type was the highest in Gyeongsangbuk-do (33.0%) and Chungcheong-do (39.0%). The O type decreased in the higher age group, whereas the P and W type showed a reversed tendency. In smokers, the proportion of W type was significantly higher than in the non-smokers (66.3% vs. 24.1%, p<0.05). Conclusion: The 4 most common BST types were OSNT, DSNT, DRNT, and OSNW. In the comparison across the 4 BST parameters according to the age, region, smoking and drinking habits, occupation, blood type, and UV exposure, significant differences were observed. Individualized and customized skin care is required according to the personal skin type. (Ann Dermatol 29(5) 586∼596, 2017)
피부 표면 온도의 변화와 diffusion chamber내의 온도 변화에 따른 경표피수분손실 및 피부 장벽 회복률의 변동
민복기 ( Pok Kee Min ),김도원 ( Do Won Kim ),전재복 ( Jae Bok Jun ),정상립 ( Sang Lip Chung ) 대한피부과학회 1996 대한피부과학회지 Vol.34 No.6
Background: The epidermal permeability barrier resides in the intercellular spaces of the stratum corneum and is composed of lipids. Objective : The purpose of this study was to measure the changes of transepidermal water loss (TEWL) and the recovery rate of the epidermal permeability barrier according to the skin surface temperature(SST) using an evaporimeter after tape-stripping in vivo and after treatment with several kinds of solvent in vitro. Methods : In the in vivo study, basal TEWL and SST were measured on both flanks of the neonatal rats consisting of an!.sthetized and non-anesthetized groups. The epidermal barrier was disrupted by repeated tape-strippings which were terminated when the TEWL reached 20-50 gram/m/h. TEWL and SST were measured immediately and 2.5, 6, 10, 24, 48 and 72 hours after tape-stripping. For the in vitro study, sheets of epidermis were separated from the circumcised prepuce, and were pretreated with acetone, petroleum ether or distilled water for 6 minutes. A piece of the separated epid~ermis was placed in a diffusion chamber, and TEWL was measured with an evaporimet,er that was placed onto the top of the chamber over a temperature range of 25 37C in the chamber. Results : In the in vivo study, SST increased according to the elevation of the ambient temperature in neonatal rats with a statistical significance(p<0.05). The recovery rates of both non anesthetized and anesthetized groups increased in the higher SST especially during the first 10 hours. We observed the effect of the temperature in the diffusion chamber on TEWL after treatment with several kinds of solvent in vitro. The data obtained was plotted semi-logarithmically with TEWL as a function of temperature in the chamber, but there was no a statistical difference among the solvent treated grorps. Conclusion. According to the results of the study, SST should be clearly rnentioned in any kind of studies concerning TEWL measurement. Further studies of the relationships between TEWL and SST are needed. ~(Kor J Derrnatol 1996;34(6): 875-885)