June 2026 in “Clinical and Experimental Dermatology” In this study, researchers observed a rare presentation of alopecia areata characterized by hair shafts with segmental heterochromia and changes in thickness, indicating a fluctuating low-level inflammatory process with recovery periods in the hair's normal characteristics.
June 2025 in “British Journal of Dermatology” This case study describes an uncommon variant of coudability hair in alopecia areata, where intermittent inflammatory processes result in alternating bands of lighter color and reduced hair shaft calibre.
September 2024 in “Brazilian Journal of Hair Health” This study found that four months of oral nutrient supplements improved hair density by 16-21% and caliber by 18-22% in men and women with pollution-related hair loss, addressing oxidative damage without using finasteride, antiandrogens, or minoxidil.
December 2020 in “Journal of The American Academy of Dermatology” In this study, machine learning models showed high accuracy in predicting therapeutic outcomes for female pattern hair loss, highlighting the significant impact of age of onset and condition duration on treatment response.
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January 2009 in “Journal of cosmetic and laser therapy” In this study, low-level laser therapy showed no statistically significant improvements in hair growth measures, despite some patients experiencing increases in terminal hairs and shaft diameter.