Hair counters count hairs. Scalp-hair counters can and maybe should celebrate that this year, 2026, is the fortieth anniversary year of the publication of one of the most treasured studies of how to improve one’s ability to count scalp hairs. That study is: “Quantification of Scalp Hair — A Computer-Aided Methodology,” Robert D. Gibbons, Virginia […]
The growth of human hair in nude mice has been studied more than the growth of mouse hair in nude humans. This study reports some of the early work about the first of those categories: “The Growth of Human Hair in Nude Mice,” Dominique Van Neste, Dermatologic Clinics, vol. 14, no. 4, 1996, pp. 609-617. […]
The phrase (and maybe the very idea of) “pseudo green hair” was introduced to the public in this trichological study: “Pseudo Green Hair,” Xavier Tomas, Marina Nogueras, Alvaro Bartolome, and Juan Ferrando, International Journal of Trichology, vol. 14, 2022, pp. 65-7. The authors report: “we present a case of green hair highlights, coinciding with the […]
This week’s Feedback column (that I write) in New Scientist magazine has five segments. Here are bits of each of them: Tiny black hole batteries — … They handwave away the swath of problems reputed to afflict anyone who suggests even going near a black hole. Their black hole, they specify, will be a “tiny black hole”. This […]