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This study found that neither caffeine nor N,N-dimethylglycine treatments were toxic to balding or nonbalding dermal papilla cells and could stimulate calcium influx, indicating treatment responsiveness.

In this study, the researchers found that their conductive bio-harvesting tonic enhanced hair follicle proliferation and delayed regression with electric stimulation and the antifungal agent 6-pentyl-α-pyrone in both mice and human hair follicle tests.

This study found that both bFGF and herbal extracts significantly induced proliferation in human hair follicle mesenchymal stem cells, suggesting their potential for promoting hair growth.

This study found that the natural product Shi-Bi-Man significantly promoted hair regeneration in cynomolgus monkeys, increasing hair follicle number and activation by boosting specific protein markers and interactions in Laminin-related pathways.

This study found that the green alga Botryococcus terribilis and its novel compounds significantly promoted hair growth marker gene expression in hair follicle dermal papilla cells without cytotoxic effects.

This article discusses methods to evaluate hair growth stimulants and reports no new clinical results; the authors highlight the need for more precise identification of stem cell sites in hair follicles.

This study found that alcoholic extracts of Cinchona succirubra, Dictamnus dasycarpus, Brassica juncea, and Sophora flavescens promoted hair growth in 5-week-old mice.

In this study, researchers developed a polyphenol–amino acid nanozyme capable of controlled hydrogen peroxide delivery, which effectively activated hair follicles via oxidative stress in a mouse model, suggesting a potential non-pharmacological treatment for alopecia.

This study found that ethanol-extracted propolis stimulated hair growth in mice by promoting the proliferation of hair keratinocytes.

This study found that bisbenzylisoquinoline alkaloids from Stephania cepharantha Hayata stimulated growth in cultured murine hair cells but not in keratinocytes or fibroblasts.

This study found that purified humic acids from oxidized coal enhance plant growth by modulating oxidative stress and influencing photobiological processes, with improved root growth and enzyme activity linked to antioxidant and pro-oxidant properties.

This study reports that the novel small molecule IM176OUT05, by modifying stem cell metabolism, promoted hair regrowth and increased hair follicle numbers in mice.

In this study, α-MSH and cyclic AMP were found to stimulate melanogenesis in hair follicle cultures, while cyclic GMP and melatonin inhibited melanin production but not tyrosinase activity.

This review discusses the role of neuro(active)steroids, particularly those in the 5α reductase pathway, in modulating dopamine signaling and their impact on neuropsychiatric disorders characterized by dopamine imbalances, including addiction, schizophrenia, and Parkinson's Disease.

This study reports that stimulating sensory neurons with capsaicin and isoflavone increases IGF-I production, promoting hair growth in mice and human volunteers with alopecia.

This study found that cepharanthine and its structural analogues may stimulate hair growth by promoting the proliferation of human dermal papilla cells and increasing VEGF expression in vitro.

This review examines the anti-alopecia effects of plant-derived phytochemicals and their mechanisms for promoting hair growth, but it reports no new clinical findings.

This review discusses recent strategies targeting the neuroactive steroid biosynthetic pathway to enhance neurosteroidogenesis, highlighting their potential benefits for neurodegenerative and neuropsychiatric diseases, but reports no new clinical findings.

This study found that adding yeast extract or coconut water to Panax ginseng root hair cultures did not increase ginsenoside levels, though coconut water increased biomass.

This study found that a specific combination of plant growth regulators effectively enhanced in vitro propagation and rooting of Eclipta alba, potentially enabling commercial-scale plant production.

This study on rats found that topical application of bacterial melanin significantly stimulates hair growth by prolonging the anagen phase and enhancing vasodilation in the treated skin areas compared to controls, suggesting its potential as a cost-effective hair growth treatment.

This article reviews historical and traditional uses of the herb Bacopa monnieri, or Brahmi, for enhancing memory and other medicinal benefits, but presents no new research findings.

This review summarizes research finding over 150 new molecules with various biological activities from traditional herbal medicines studied in China, Mongolia, Uzbekistan, and Bangladesh.

This preclinical study reported that the mix of biomimetic peptides, MGF, promoted hair growth and increased cell proliferation in cultured human hair follicles from AGA subjects.

This review examines the roles of adenosine and caffeine in regulating hair growth cycles but reports no new results, highlighting unanswered questions about their specific mechanisms.

This review suggests that brassinosteroids may have similar biological activities in both plants and other organisms, prompting further exploration of steroid regulation mechanisms across different life forms.

This study identified hypericin and berberine as compounds that can support hair growth by enhancing oxytocin receptor expression and acting as an oxytocin receptor agonist, respectively, potentially serving as practical alternatives to oxytocin for treating hair-loss diseases.

This study found that neuroactive steroids like DHEA and pregnenolone influence cocaine-induced appetence in mice through their interaction with the ς₁ receptor, suggesting a role in individual vulnerability to addiction.

This study reported that phytochemicals SA-4 and SA-6 from Tridax procumbens exhibited a dose-related immunostimulatory effect on mice, suggesting their potential as immunostimulators.