18 citations
,
March 2009 in “Skin pharmacology and physiology” This study found that sunlight exposure causes significant structural and chemical damage to hair, including cuticle loss, cortex damage, and discoloration, with water playing a major role in discoloration of brown hair.
210 citations
,
May 2006 in “The FASEB journal” This study found that oxidative stress in hair follicle melanocytes contributes to premature aging and apoptosis, providing insights into graying as a model for studying aging and testing antiaging therapies.
7 citations
,
September 2004 in “International Journal of Cosmetic Science” This study demonstrated that visible light lightens blond hair more effectively than ultraviolet light, attacking melanin granules directly, whereas ultraviolet light primarily damages other hair tissues following washing.
152 citations
,
December 2003 in “Micron” This review discusses the development, regulation, and aging of the human hair follicle pigmentary system and suggests potential for reversing hair graying by manipulating follicle melanocytes in vitro, but reports no clinical results.
3 citations
,
December 2003 in “Micron” This review discusses recent advancements in hair loss treatments, focusing on androgenetic alopecia, alopecia areata, frontal fibrosing alopecia, and hair transplant technologies, without presenting new research findings.
86 citations
,
August 2000 in “Pigment cell research” This study observed that melanogenesis in human hair follicles is linked to anagen phases, with melanocyte activity and enzyme expression being region-specific to the nascent bulb.
130 citations
,
December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, different types of catagen in the C57BL/6 mouse model exhibited varying effects on hair follicle melanocytes and melanin distribution, with spontaneous and dexamethasone-induced catagen showing pigment incontinence, while cyclophosphamide-induced catagen retained dendritic melanocytes but increased ectopic melanin.
161 citations
,
June 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that the switch-off of melanogenesis during the hair cycle in C57 BL-6 mice is a gradual and stochastic process starting in mid anagen VI, with specific biochemical markers indicating the transition to catagen.
44 citations
,
April 1979 in “Journal of Ultrastructure Research”