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Certain skin drugs and topical agents, including some natural extracts and fragrances, can cause allergic reactions. Some hair dyes and extensions, as well as minoxidil, a hair growth treatment, can also cause allergies. Botulinum toxin A can effectively reduce sweat but may have temporary side effects.

This study suggests that red ginseng rhizome extracts, particularly ginsenoside Ro, may promote hair re-growth in an androgenetic alopecia model due to their inhibitory activity on testosterone 5α-reductase.

This review found that 5α-reductase inhibitors are associated with slightly increased rates of sexual dysfunction, gynecomastia, and mood disorders, but the true significance and persistence of these effects remain unclear.

This study found that transethosomal gel loaded with propranolol hydrochloride prolonged drug release and increased peak plasma concentration compared to an oral tablet, suggesting a promising alternative for delivery.

Thick scalp melanoma can be hard to diagnose because it often looks like other skin conditions.

This study observed that a tacrolimus solution (0.1%) applied to the scalp was effective and well-tolerated for treating inflammatory scalp conditions, with 72.7% of patients showing an excellent response after 2 months of treatment, which persisted after 6 months.

This article discusses the latest trends in hair restoration surgery and reports no new clinical findings, highlighting the continued unsatisfactory nature of drug therapies for androgenetic alopecia.

This study found that skin microbiota, particularly in wild-type mice, promotes wound-induced hair follicle neogenesis and wound healing, highlighting the potential downsides of routine antibiotic use on skin regeneration.

This review suggests that while NSAIDs may inhibit bone healing and have variable effects on other complications, caution is advised in their prescription post-surgery, particularly for female patients.

This study found that early life stress significantly affects hedonic sensitivity to high-palatable food by altering gonadal hormones in prenatally-stressed male and female rats, with sex-dependent changes in reward-related behaviors and neurochemistry.

This review discusses the role of various hormones in diffuse hair loss and emphasizes the need for further research to clarify their complex interactions and potential therapeutic implications, but reports no new clinical results.

This study found that endophytic bacteria isolated from Leea indica leaves showed high antioxidant activity, suggesting they could be a novel source of natural antioxidants.

In this study, researchers found that Sundanese mothers in a rural village in West Java frequently used 25 medicinal plant species, primarily from the Zingiberaceae family, during pregnancy, childbirth, and postpartum, with popular preparations including decoctions and cooking.

This study found enhanced remyelination in the corpus callosum of late pregnant rats compared to virgin and postpartum rats, suggesting a pregnancy-associated promyelinating effect mediated, in part, by the GABA A receptor system.

This study found that keratin-75, discovered in enamel tissue, is secreted by ameloblasts using an unconventional pathway involving the ER-Golgi-Intermediate-Compartment and Golgi, differing from typical cytokeratin localization.

In this study, researchers developed and evaluated a topical dutasteride gel for treating male pattern baldness, finding that a formulation with 10% garlic extract showed the most promising results in promoting faster hair growth compared to other formulations tested.

This study found that PCOS patients with menstrual disorders exhibited hormonal changes and higher fasting glucose levels, despite no significant differences in insulin resistance markers.

This study observed that disrupting the Pnkp gene in adult mice resulted in a premature aging-like phenotype, suggesting PNKP's vital role in maintaining normal growth and survival of certain progenitor cell populations.

This study observed that COVID-19-related stress and fear were potentially associated with an increased occurrence of hair diseases like telogen effluvium, alopecia areata, and seborrheic dermatitis among medical students in Bangladesh.

This systematic review found conflicting evidence on hair loss related to GLP-1 receptor agonists in adults with type 2 diabetes or obesity, with some studies noting hair regrowth and others reporting hair loss as a side effect. Further research is needed to understand this relationship.

In this study, microneedling-administered topical cetirizine was observed to significantly enhance hair density and increase vellus hair prevalence in men with androgenetic alopecia, with no notable adverse effects reported.

This study found that a long-term astrocyte culture model can effectively study astrocyte senescence and suggests minoxidil as a potential candidate to regulate brain aging by normalizing dysregulated gene expression in aged astrocytes.

This study found that overexpression of miR-214 in keratinocytes inhibits hair follicle development and cycling by targeting β-catenin in the Wnt signaling pathway.

This review discusses the potential of plant polyphenols to overcome multidrug resistance in various solid cancers and reports no new experimental results; further research is suggested.

In this study, spiny mice showed superior cardiac recovery after myocardial infarction compared to other mouse strains, with enhanced myocardial preservation and functional stabilization.

This study found that human mesenchymal stem cells overexpressing JAM-A improved hair follicle structure and hair formation in mice by reducing abnormalities such as curved and zigzagged follicles.

This study found that engineered skin substitutes made with skin-derived precursors and epidermal stem cells can regenerate hair follicles after grafting into nude mice.

This review discusses the impact of calorie restriction on enhancing stem cell potency and regenerative abilities in mammalian tissues and reports no new experimental results.

This study found that an enzymatic digestion method for isolating hair follicle stem cells from scalp specimens yielded 5.3 times more epithelial cells than explant cultures, while supporting comparable cell functionality, offering a promising technique for tissue engineering and regenerative medicine.

This chapter reviews the hair follicle's role in drug and chemical penetration through the skin but does not present new experimental findings.