April 2026 in “Journal of Dermatological Treatment” This study concluded that in female pattern hair loss patients, CGF and i-PRF treatments were more effective than PRP in increasing target area hair count, with i-PRF having the lowest adverse event rate.
34 citations
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August 1966 in “Experimental cell research” This study examined developing hair cortex with electron microscopy and found that keratin fibrils form between specific regions in hair follicles and aggregate into twisted cables.
1 citations
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January 2021 in “Indian Dermatology Online Journal” This expert group provided recommendations for preparing and using platelet-rich plasma in treating androgenetic alopecia, suggesting a manual double-spin method and specific dosing, although further studies on injectable platelet-rich fibrin are needed.
October 2023 in “Animal production science” This study investigated how vitamin A deficiency, certain diseases, and pregnancy affect cattle coat hair structure, finding notable keratin fibril interference under vitamin A deficiency and structural modifications in chronic renal failure, while pregnant cows exhibited superior hair tensile strength compared to non-pregnant ones.
24 citations
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December 1957 in “Experimental Cell Research” This study observed that the glassy layer of hair follicles in guinea pigs consists of thick collagen-type fibrils organized into two distinct arrays, whereas in young mice, the fibrils are thinner and develop between the outer root sheath and fibroblasts.