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This review explores the complex interrelationships among different properties of natural hair fibers and underscores the need for a holistic taxonomy to improve data interpretation across disciplines, but it reports no new experimental results.

This study found that metabolite levels in hair samples differ significantly by hair color and segment, leading to recommendations for best practices in hair metabolomic studies.

This study found that hair analysis is an effective non-invasive method for assessing metabolic fluctuations, showing stable advanced glycation end products levels that correlate with age and differ significantly between diabetic and non-diabetic rats.

This study found that hair from the vertex posterior is a reliable sampling region for detecting zolpidem intake, showing consistent drug concentration and peak position compared to other scalp regions.

Gender affects hair and scalp characteristics, with differences in hormone responses, graying patterns, and trace metals.

This paper discusses advancements in forensic hair analysis, emphasizing a novel DART–HRMS method that improves the accuracy and efficiency of detecting drug use timelines.

This study found that SZ95 sebocytes and HaCaT keratinocytes exhibit distinct enzyme expressions and activities, implicating their different roles in androgen metabolism and homeostasis in vitro.

This review suggests that skin may largely protect itself from CYP-generated reactive metabolites due to higher conjugating enzyme activities, while highlighting limitations in modeling human skin metabolism experimentally.

This review summarizes the use of chlormadinone acetate for hormone replacement therapy and contraception, highlighting its anti-androgenic effects, contraceptive efficacy, and clinical tolerability, without offering new clinical results.

This study found that women with female pattern androgenic alopecia have significantly higher levels of certain androgens and androgen sulfates compared to normal premenopausal women, suggesting markers for diagnosis and treatment efficacy.

In this study, 13-cis-5S*,8S*-epidioxy-5,8-dihydroretinoic acid was found to be significantly more cytotoxic to cancer cell lines than other retinoic acid analogs evaluated.

This study found that coadministering minoxidil with tretinoin cream increased minoxidil absorption nearly threefold in healthy males, attributed to increased stratum corneum permeability.

This review discusses the potential of 4-azasteroids as 5α-reductase inhibitors for treating hirsutism, reporting their promising effects in animal studies but noting no clinical trials have been conducted yet.

The document concludes that using LC-MS/MS for measuring androgens is more accurate than older methods, but it needs careful validation and standardized references to be most effective.

This review discusses androgen manipulation strategies for conditions like benign prostatic hyperplasia and prostatic carcinoma but reports no new clinical results.

In this review, researchers examined the physiological benefits of Cheonggukjang, a salt-free fermented soybean paste, highlighting its various health-promoting components that may contribute to improved heart health, diabetes management, and cancer prevention, among other benefits.

Minoxidil in breast milk may harm nursing infants.

Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.

This study reported the development of a novel and reliable liquid chromatographic method to measure testosterone and epitestosterone in human urine, offering sensitive detection for doping control.

This study developed a specific radioimmunoassay to measure minoxidil levels in human serum directly from a single oral dose.

This study found that dutasteride completely suppressed the formation of 5alpha-dihydro metabolites in cultured human skin cells, suggesting its potential use in acne and androgenetic alopecia.

This study concluded that the best approach for detecting Androsta-1,4,6-triene-3,17-dione administration in horses is monitoring the metabolites M1b or M4 in urine, detectable up to 77 hours post-administration.

This study found that the penetration enhancer SEPA™ significantly increased both the speed and amount of hair growth from minoxidil in balding stumptail macaques compared to Rogaine®.

This study found that Prosopis farcta is a rich source of phenolic compounds with strong antioxidant activity, suggesting its potential for use in food, beverage, feed, and pharmaceutical applications.

This study found that phyto-vesicles of ß-sitosterol showed better absorption and improved activity for treating androgenetic alopecia in rats compared to the compound and its complex.

This review reports that natural compounds show promise in slowing skin photoaging by targeting cellular pathways in keratinocytes and fibroblasts. However, comprehensive clinical studies are needed to verify their efficacy and safety.

This review assessed experimental studies on herbs used for alopecia, identifying potential mechanisms involving hair cycle management and keratinocyte processes, but highlighted a need for improved evidence on quality control and toxicity of these herbal treatments.

This review discusses the potential efficacy of topical antiandrogen therapies for treating androgenetic alopecia and acne vulgaris, finding promising results but highlighting the need for more comprehensive studies.

This study describes an analytical technique combining field-enhanced sample stacking with dispersive liquid-liquid microextraction, offering improved sensitivity for detecting finasteride and its metabolite in urine samples from patients treated for androgenetic alopecia.

In this study, extracts from three Polynesian plants—Bidens pilosa, Calophyllum inophyllum, and Fagraea berteroana—were found to increase dermal papilla cell proliferation and modulate hair growth-related gene expression, suggesting potential for stimulating hair growth.