J. Phys. IV France
Volume 125, June 2005
Page(s) 729 - 731

J. Phys. IV France 125 (2005) 729-731

DOI: 10.1051/jp4:2005125167

Application of the front detection photopiroelectric configuration to the study of in vivo human skin

G. Gutierrez-Juarez1, J.L. Pichardo-Molina2, L.N. Rocha-Osornio1, R. Huerta-Franco3, R. Ivanov4, B. Huerta-Franco5, T. Cordova-Fraga1 and M. Vargas-Luna1

1  IFUG, A. P. E-143, 37150, Leon, Gto., Mexico
2  CIO, Loma del Bosque 115, Lomas del Campestre, 37150, Leon, Gto., Mexico
3  IISTUG, Eugenio Garza Sada 572, Lomas del Campestre, 37150, Leon, Gto., Mexico
4  Facultad de Fisica, UAZ, Preparatoria 301, Progreso, 98060, Zacatecas, Zac., Mexico
5  Inst. Jose Barba R. Federalismo Nte. 3102, Atemajac del Valle, 45190, Guadalajara, Mexico

We report a novel method for measurements in vivo of the penetration of topically applied substances by inverse photopyroelectric configuration. This configuration was used to obtain the thermal effusivity, as a function of time, of in vivo human skin with ointments. This thermal magnitude was employed to characterize the penetration on the anterior-face of the volunteers forearm. This thermal effusivity was fitted with an exponential function in order to obtain a parameter (characteristic time) for the penetration. The substances used were a sunscreen and Vick Vaporub ointment. We found that the sunscreen have a characteristic time bigger that the Vick Vaporub ointment. The feasibility of skin hydration studies are discussed.

© EDP Sciences 2005