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This study demonstrated that an LC/MS-MS method could effectively detect and quantify the vitamin B3 vitamer nicotinamide in human hair, suggesting its potential use for long-term deficiency examination.

This study observed that nicotinamide can effectively inhibit human hair growth and promote hair follicle regression in cultured human scalp models without negatively affecting epidermal vitality, suggesting its potential as a hair growth inhibitor in cosmetic applications.

This study found that nicotine caused damage to cochlear hair cells in vitro, and melatonin might protect against this damage, indicating its potential as a treatment for smoking-induced hearing loss.

This study developed a straightforward HPTLC method for detecting nicotine and cotinine in human plasma and urine, concluding that liquid-liquid extraction with methanol: chloroform: ammonia achieved optimal separation and is applicable for forensic analysis of lethal nicotine intoxication.

In this study, oral supplementation with NMN for 12 weeks in middle-aged Japanese women significantly increased hair growth density and diameter and improved subjective assessments of hair texture and quality of life, with no significant changes in hair hormone concentrations observed.

In this study, the researchers observed that a recombinant human collagen complex with nicotinamide promoted hair growth in rat models, increased hair follicle stem cell survival, and enhanced key protein expression, suggesting potential benefits for hair health and loss prevention.

This study investigated the effects of a recombinant human collagen complex on hair growth, finding it enhanced survival and function of hair follicle stem cells and promoted hair growth in rat models, suggesting its potential for hair loss prevention and hair health maintenance.

In this study, researchers assessed the physical-chemical and microbiological stability of various pharmaceutical ingredients in the vehicle TrichoSolTM, finding differing beyond-use dates for the compounds, such as 180 days for cetirizine hydrochloride, but only 90 days for progesterone at higher concentrations.

This abstract introduces TrichoFoam™, a new foaming vehicle for compounding pharmacies, designed to be a gentle, non-irritating option for alopecia treatment, acknowledging that current topical treatments are limited and oral products may cause adverse effects.

This study found no statistically significant difference in the severity of insect bite hypersensitivity symptoms between horses receiving a nicotinamide supplement and those receiving a placebo.

This study investigated the effects of GFC with FGF5s and NMN at a depth of 0.8 mm using a microneedle for treating hair loss, but the abstract provides no measurable results.

This study found that treating androgenetic alopecia patients with microneedle-delivered GFC containing FGF5s and NMN increased hair density and diameter compared to normal saline.

This study observed increases in scalp blood flow following the application of 3% minoxidil and 0.1% hexyl nicotinate in individuals with alopecia.

In this study, NMN was found to reverse hair follicle atrophy, thinning, and sparsity in mice induced by DHT, and significantly decreased DHT-induced inflammation and oxidative stress in cultured human dermal papilla cells, enhancing hair growth-related markers.

This study developed a rapid, precise, and specific chromatographic method to measure alpha-tocopheryl nicotinate in cosmetics, using alpha-tocopheryl acetate as an internal standard.

This study screened synthesized pyridinecarboxamides for antitumor properties and found that many, particularly 5c and 7a, showed moderate in vitro activity against various human tumor cell lines.

This study found that pre-treatment with the neurosteroid allopregnanolone in mice reduced nicotine withdrawal symptoms, suggesting potential therapeutic benefits for nicotine dependence.

In this study, researchers synthesized nine new nicotinamide derivative compounds and found that one, identified as N4, exhibited significant cytotoxic effects on MCF-7 breast cancer cells, while other derivatives demonstrated notable antibacterial, antifungal, and antibiofilm activities.

This study revealed that chronic restraint stress in mice led to significant alterations in metabolic pathways and gene expression associated with hair growth inhibition, using metabolomics and transcriptomics analyses.

This study developed and validated a method to analyze active ingredients in hair nourisher products, which was successfully applied to products from the market.

This study developed and validated a method to analyze active ingredients like nicotinamide and tocopherol in hair nourisher products using HPLC, which may facilitate quicker market access for these products.

This study found that cosmetic hair treatments like bleaching and dyeing significantly reduced drug concentrations in hair samples, with decreases ranging from 30% to over 60% depending on the treatment and hair damage level.

This review examines the dermatologic effects of tobacco use and nicotine, noting potential benefits and drawbacks for various skin conditions, but reports no new clinical results.

This review discusses the negative effects of cigarette smoking on various skin conditions and emphasizes the importance of dermatologists advising patients to quit smoking, but it presents no new research findings.

This review discusses varying views on the pathogenesis of hidradenitis suppurativa and the challenges in achieving a consensus, emphasizing the need for further research rather than providing new findings.

This study found that poly(adenosine diphosphate-ribose) synthesis in human skin varies by cell type and condition, with distinct patterns in psoriatic, cancerous, and normal tissues.

This case report illustrates that pellagra can develop in patients with anorexia nervosa without typical signs of severe malnutrition, responding rapidly to nicotinamide and tryptophan therapy.

This study found that the prevalence of androgenetic alopecia was significantly higher among smokers compared to nonsmokers, though the severity wasn't linked to smoking intensity.

This review discusses various perspectives on the pathogenesis, classification, and contributing factors of hidradenitis suppurativa and reports no new experimental results; the authors call for further studies to advance understanding and treatment.