May 2026 in “Applied Spectroscopy” This study used Raman spectroscopy and wide-angle X-ray scattering to observe two main α-helix to β-sheet transitions in hair keratin under varying humidity levels, finding that water impacts when these structural changes occur, involving a disordered state.
December 2025 in “Biopolymers” This study found that chemically treated hair, particularly when subjected to both acid straightening and bleaching, experiences more significant structural damage when exposed to heat, highlighting key changes in both the internal and surface components of hair fibers.
9 citations
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January 2023 in “Langmuir” This study presents a method for directly measuring the solubility of solid chemicals in the skin's stratum corneum under various humidity conditions, emphasizing its importance for dermal drug delivery and chemical safety assessments.
15 citations
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May 2013 in “International Journal of Cosmetic Science” This study found that while ethnic hair types share a common fibrous keratin structure, variations in keratin-associated proteins and lipids may lead to different macroscopic hair characteristics.
April 2006 in “Dermatologic Clinics” This study found that white wax and its extract significantly promoted hair growth in a mouse model of androgenetic alopecia, outperforming finasteride by inhibiting 5α-reductase activity and enhancing cellular proliferation.