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Electrical measurement of the water content of the stratum corneum in vivo and in vitro under various conditions: comparison between skin surface hygrometer and corneometer in evaluation of the skin surface hydration state.
Acta Derm Venereol. 1993 Oct; 73(5):335-9.AD

Abstract

Two commercially available electrical instruments which evaluate the hydration state of the skin surface were compared in in vitro and in vivo experiments. The skin surface hygrometer (Skicon-200) employs high-frequency conductance, whereas the corneometer (CM 420, CM 820) uses electrical capacitance to determine the level of hydration. In a simulation model of in vivo stratum corneum (SC), the high frequency conductance device showed a much closer correlation with the hydration state of the surface SC (r = 0.99) than the capacitance device (r = 0.79), suggesting that the former can accurately assess the hydration dynamics of SC, particularly that due to the accumulation of easily releasable secondary bound water and free water. Both devices were insensitive to changes of hydration taking place in deeper viable skin tissues, e.g. the accumulated tissue fluids in suction blisters. Although the capacitance device correlated poorly with the hydration dynamics in normal SC, its sensitivity to changes occurring in extremely dry skin, such as scaly psoriatic lesions, suggests its measurements characteristics at an extremely low state of hydration, consisting of mostly bound water, such as noted in pathologic SC.

Authors+Show Affiliations

Department of Dermatology, Tohoku University School of Medicine, Sendai, Japan.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

7904396

Citation

Hashimoto-Kumasaka, K, et al. "Electrical Measurement of the Water Content of the Stratum Corneum in Vivo and in Vitro Under Various Conditions: Comparison Between Skin Surface Hygrometer and Corneometer in Evaluation of the Skin Surface Hydration State." Acta Dermato-venereologica, vol. 73, no. 5, 1993, pp. 335-9.
Hashimoto-Kumasaka K, Takahashi K, Tagami H. Electrical measurement of the water content of the stratum corneum in vivo and in vitro under various conditions: comparison between skin surface hygrometer and corneometer in evaluation of the skin surface hydration state. Acta Derm Venereol. 1993;73(5):335-9.
Hashimoto-Kumasaka, K., Takahashi, K., & Tagami, H. (1993). Electrical measurement of the water content of the stratum corneum in vivo and in vitro under various conditions: comparison between skin surface hygrometer and corneometer in evaluation of the skin surface hydration state. Acta Dermato-venereologica, 73(5), 335-9.
Hashimoto-Kumasaka K, Takahashi K, Tagami H. Electrical Measurement of the Water Content of the Stratum Corneum in Vivo and in Vitro Under Various Conditions: Comparison Between Skin Surface Hygrometer and Corneometer in Evaluation of the Skin Surface Hydration State. Acta Derm Venereol. 1993;73(5):335-9. PubMed PMID: 7904396.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrical measurement of the water content of the stratum corneum in vivo and in vitro under various conditions: comparison between skin surface hygrometer and corneometer in evaluation of the skin surface hydration state. AU - Hashimoto-Kumasaka,K, AU - Takahashi,K, AU - Tagami,H, PY - 1993/10/1/pubmed PY - 1993/10/1/medline PY - 1993/10/1/entrez SP - 335 EP - 9 JF - Acta dermato-venereologica JO - Acta Derm Venereol VL - 73 IS - 5 N2 - Two commercially available electrical instruments which evaluate the hydration state of the skin surface were compared in in vitro and in vivo experiments. The skin surface hygrometer (Skicon-200) employs high-frequency conductance, whereas the corneometer (CM 420, CM 820) uses electrical capacitance to determine the level of hydration. In a simulation model of in vivo stratum corneum (SC), the high frequency conductance device showed a much closer correlation with the hydration state of the surface SC (r = 0.99) than the capacitance device (r = 0.79), suggesting that the former can accurately assess the hydration dynamics of SC, particularly that due to the accumulation of easily releasable secondary bound water and free water. Both devices were insensitive to changes of hydration taking place in deeper viable skin tissues, e.g. the accumulated tissue fluids in suction blisters. Although the capacitance device correlated poorly with the hydration dynamics in normal SC, its sensitivity to changes occurring in extremely dry skin, such as scaly psoriatic lesions, suggests its measurements characteristics at an extremely low state of hydration, consisting of mostly bound water, such as noted in pathologic SC. SN - 0001-5555 UR - https://www.unboundmedicine.com/medline/citation/7904396/Electrical_measurement_of_the_water_content_of_the_stratum_corneum_in_vivo_and_in_vitro_under_various_conditions:_comparison_between_skin_surface_hygrometer_and_corneometer_in_evaluation_of_the_skin_surface_hydration_state_ L2 - https://www.medicaljournals.se/acta/content/abstract/10.2340/0001555573335339 DB - PRIME DP - Unbound Medicine ER -