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This review presents the practice of using hair bioelement analysis to assess nutritional status or environmental exposure, proposing complex interactions and hypotheses regarding depression and autism but reports no new clinical results.

This study introduced the Vitamin Deficiency Detection System, which helps users identify potential vitamin deficiencies by analyzing symptoms they select on a user-friendly interface.

This study demonstrated that a photometric flow titration method using KMnO4 and minoxidil provided recovery rates of 97.6 to 102.8% for commercial samples, with relative errors of 3.5 to 4.0% compared to chromatographic procedures.

This study compiles data on the microstructural and cytotoxic properties of nano physical sunscreens, emphasizing the need for a technology platform to assess nanomaterial characteristics due to their growing use in cosmetics.

This study using high-performance liquid chromatography reported that mice with more diverse gut microbiota had higher levels of specific compounds in hair compared to those with less diversity, with stress affecting certain plasma levels.

This article discusses the potential of novel microneedle transdermal systems for enhanced drug and vaccine delivery through the skin, but reports no clinical results and emphasizes ongoing trials.

This study found that hair cosmetics have strong bacteriostatic properties, suggesting that current microbial test methods for these products should be revised.

This study found that supplementation with micronized and emulsified ferric pyrophosphate effectively improved lab test results and reduced iron deficiency symptoms in patients aged 19-70, with the majority reporting good tolerance and few side effects.

This review discusses the challenges of traditional phytochemical delivery methods and highlights the potential of microneedles to improve intra/transdermal delivery, reporting no new clinical results.

This review highlights recent advancements in microneedle technology, noting its ability to enhance transdermal drug delivery, biosensing, cancer treatment, and skin disease repair, while emphasizing its potential for improving patient compliance and reducing side effects.

This study found that laser ablation-inductively coupled plasma-mass spectrometry can effectively reconstruct time-resolved mercury exposure in micrometer segments of a single hair strand from fish-eaters.

This notice states that the article has been withdrawn due to the journal's transfer to a new publisher and reports no research findings.

This article presents a comprehensive overview of hair microscopy techniques and their diagnostic potential for systemic and cutaneous disorders, emphasizing its usefulness in resource-limited settings and highlighting the underutilization of this non-invasive method due to lack of awareness.

This study observed that individuals with type 1 diabetes mellitus have notably lower levels of essential and trace elements like Calcium, Potassium, and Zinc in biological samples compared to non-diabetic controls.

This study presents a rapid method for detecting multiple xenobiotics in urine, effectively identifying 45 compounds banned in sports with detection limits below WADA's performance levels.

In this study, the researchers found that the absence of the NFI-C transcription factor delayed the hair growth cycle in mice by affecting key gene expressions and signaling pathways.

This study developed and validated a simple and cost-effective spectrophotometric method to accurately determine Aminexil in cosmetic formulations containing niacinamide and pyridoxine.

This study found that copper levels varied significantly by gender, while young infants had higher levels of copper, zinc, calcium, magnesium, and iron compared to older age groups.

This review discusses medical conditions and therapies related to various elements, such as zinc, copper, mercury, cadmium, lead, chromium, and arsenic, without reporting new experimental results; it highlights past findings on deficiencies, toxicities, and historical cases.

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 found that a photometric flow titration using KMnO4 and minoxidil provided results comparable to a chromatographic procedure, with recoveries between 97.6% and 102.8% and relative errors of 3.5% to 4.0%.

This study introduced new spectrophotometric methods to estimate Minoxidil in pharmaceutical forms, demonstrating its linearity across various buffers and solvents, and found these methods to be simple, economical, and effective according to ICH guidelines.

This study introduces a co-design framework using finite element analysis to optimize separable bubble microneedles, demonstrating enhanced transdermal and sublingual drug delivery in preclinical models. In vivo results showed faster hair regrowth and glucose lowering in animals, indicating potential improvements over traditional methods.

The method effectively maps lead and zinc in hair, aiding understanding of heavy metal exposure risks.

This study described a potentiometric titration method for determining minoxidil, which showed recoveries of 97.4 to 98.7% and agreed with chromatographic results within a 90% confidence level.

This study developed a co-design framework using finite element analysis to optimize bubble microneedles, achieving controlled tip separation and effective drug delivery through the skin and mucosa while maintaining insertion strength.

This study found that finite element analysis-guided design improved bubble microneedles' controlled tip separation and insertion strength, supporting effective transdermal and sublingual drug delivery.

New microneedle method improves hair regrowth treatment delivery.

In this study, researchers developed an electrochemical method using gold nanostructures on a glassy carbon electrode to detect minoxidil levels in hair lotions, and found it effectively quantified minoxidil in commercial products, revealing discrepancies in their labeled versus actual concentrations.

This study evaluated a UV-Vis spectrophotometric method to measure minoxidil in compounded capsules from pharmacies in Pernambuco, Brazil, finding that while the formulations met weight criteria, most deviated significantly from declared minoxidil content, highlighting the need for robust quality control in compounded medicines.