Shingo Sakai recently published a paper "Relationship Between Dermal Birefringence and the Skin Surface Roughness of Photoaged Human Skin" in Journal of Biomedical Optics. In this paper, he showed a significant correlation between the birefringence of the upper dermal region of human skin and its surface roughness. This result suggests that solar elastosis is a major factor for the progress of wrinkles.
This paper is available on the website of Journal of Biomedical Optics.
Citation: S. Sakai, N. Nakagawa, M. Yamanari, A. Miyazawa, Y. Yasuno and M. Matsumoto, "Relationship between Dermal Birefringence and the Skin Surface Roughness of Photoaged Human Skin," J. Biomed. Opt. 14, 044032 (2009).