Hair Cycle and Hair Pigmentation: Dynamic Interactions and Changes Associated with Aging

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.

This article reviews various topics discussed at a workshop on hair disorders, focusing on hair biology, diagnosis, and challenges in therapy evaluation, without presenting new clinical findings.

This review evaluates hair growth measurement methods for human scalp hair, suggesting that combining highly resolutive analytical approaches with global calibrated methods is recommended for assessing hair changes in clinical settings.

Minoxidil works better for female hair loss, but cyproterone reduces scalp oiliness and causes menstrual issues.

This study found that allergic contact dermatitis of the scalp may cause telogen effluvium, leading to mild to moderate hair loss in some patients.

In this study, finasteride 1 mg/day for 12 months did not improve hair growth or slow hair thinning in postmenopausal women with androgenetic alopecia compared to placebo.

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.

In this study, men with AGA who took finasteride 5 mg daily for 24 months showed a significant increase in hair counts compared to those who received a placebo.

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.

Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.

This letter discusses the causes of gray hair, noting both genetic factors and potential associations with other conditions or certain medications, but reports no new findings.

This review discusses the histopathology of male-pattern baldness and highlights ongoing disputes over several aspects, including sebaceous gland size and follicle loss, reporting no new clinical findings.