Premium
A Sunscreen–Tanning Compromise: 3D Visualization of the Actions of Titanium Dioxide Particles and Dihydroxyacetone on Human Epiderm
Author(s) -
Puccetti Germain,
Leblanc Roger M.
Publication year - 2000
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1562/0031-8655(2000)0710426astcvo2.0.co2
Subject(s) - stratum corneum , dihydroxyacetone , emulsion , titanium dioxide , human skin , penetration (warfare) , absorption (acoustics) , chemistry , photochemistry , materials science , organic chemistry , composite material , biology , glycerol , genetics , operations research , engineering
The self‐tanning agent dihydroxyacetone (DHA) was applied to human skin samples, and its effect on light absorption was followed in time to study the DHA influence inside the different layers of skin. Application of DHA shows increased light absorption in the visible light region, as evidenced by skin tanning. The tanning effect is enhanced by UV irradiation and appears localized in the near‐stratum corneum layer as revealed by depth analysis of the time signal. As a reference, application of an emulsion containing titanium dioxide particles shows clear surface stability and a screening of light penetration beyond the stratum corneum.