May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This review highlights that natural hair dyes from plant-derived pigments can produce viable colors on gray hair with low irritation potential, though they face challenges in shade range and consistency; some products may also be adulterated, affecting safety perceptions.
May 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This review summarizes current research on natural hair dyes, reporting that plant-based formulations can safely provide viable colors on gray hair with minimal irritation compared to synthetic options but face challenges in color range and consistency.
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March 2016 in “American Journal of Physical Anthropology” This study suggests that chemical methods can reveal subtle differences in scalp hair color variability across populations and emphasizes the need for enhanced understanding of hair fiber curvature.
August 2024 in “Steroids” This review summarizes structural insights into androgen receptor dynamics, highlighting its flexibility in binding numerous partners, which may explain adaptive resistance mutations in cancer and loss of function in androgen insensitivity syndrome.
April 2022 in “Australasian Journal of Dermatology” This case report describes a rare presentation of recurrent plaque psoriasis on the penile shaft, which was controlled with systemic therapy after topical treatments failed.