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This study found that FM dyes are effective markers for tracing live Merkel cells in in vitro experiments, as they remain visible for at least seven days and highlight cell shape better than quinacrine.

This study found that a CLSM-based approach could semi-quantitatively assess the transdermal penetration behavior of fluorescent dyes with different lipophilicities, offering a tool for early-stage screening of compound penetration.

This study describes a gel-supported in vitro system for culturing skin samples that may effectively replace animal systems for toxicity testing, showing high correlation with in vivo skin toxicity measurements.

This study reviews recent advancements in near-infrared organic light-emitting diode (NIR OLED) technologies, focusing on their applications and the diverse luminescent materials used in their emissive layers.

This study found that human hair follicle dermal papilla cells and keratinocytes self-assembled differently in 3D spheroid co-cultures, providing insights into cell distribution and organogenesis during skin regeneration.

This paper discusses the use of Digital Volumetric Imaging with fluorescent dyes to visualize and compare the interior structures of six different virgin hair types, reporting no new clinical results.

This study concluded that a liquid serum formulation delivered two fluorescent dyes to deeper follicular regions more effectively than nanoparticle systems.

This study found that the "Hair Medulla Care" treatment allows various substances to penetrate hair more effectively, suggesting potential applications for enhancing hair coloring, care, and perming processes.

This review outlines the mechanisms, applications, and development prospects of label-free imaging technologies in transdermal research and reports no new clinical results.

Liposomes with certain properties can effectively deliver drugs deep into hair follicles.

This study found that while yak belly hair is chemically similar to human hair, its higher porosity and lower mechanical strength limit its usefulness as a substitute in hair dye development.

This review discusses techniques for analyzing the cell cycle, highlighting emerging tools for measuring cell cycle speed at single-cell resolution in live animals, and reports no new results.

This study found that adding 7% Ecklonia cava extract to oxidative hair dyes significantly reduced their cytotoxicity and oxidative stress without affecting color performance.

This review covers hair dye formulations, their mechanisms, and potential applications, but reports no new findings; the authors highlight the process of oxidative dyeing and repairing damaged hair.

This study introduced a new method for extracting red mordant dyes from wool fibers that preserved the fibers for further analysis and allowed for spectrophotometric examination of the dyes' absorption curves.

This study found that mixtures used in permanent hair dyes had irritant effects on reconstructed human epidermis, while individual ingredients alone did not.

This study found that targeting the hair follicle can be increased by using lipophilic drugs combined with surfactant solutions and propylene glycol.

This study describes a new method for extracting red mordant dyes from wool fibers using ethylene diamine tetraacetic acid and N,N-dimethyl formamide, preserving the fibers for further examination.

The new system can grow hair in the lab and test hair growth treatments.

This study utilized advanced imaging techniques to quantify hair damage and dye uptake dynamics, revealing that compound penetration in hair is influenced by molecule size and lipophilicity.

This chapter reviews the anatomy and structure of hair, discusses hair damage and analyses, and explores methods for processing hair changes, but presents no new research findings.

This chapter reviews hair anatomy, hair shaft structure, and various cosmetic treatments that can alter or damage hair, but it presents no new research findings.

This review outlines key considerations for designing fluorescence microscopy experiments in cell biology, discussing the importance of hardware availability, suitability of biological models, and imaging agents to achieve high-resolution and informative images.

Human hair structure varies by ethnicity, and certain treatments can improve hair condition and appearance.

Twisting hair weakens it, but strength can be recovered at low twist levels.

This review highlights that two-photon excitation microscopy is a valuable tool for visualizing live skin structures and immune responses at high resolution, though its clinical use is hindered by safety and cost issues.

A new method helps understand hair shine and various products improve hair care.

This study introduces a novel non-invasive method called "differential stripping" to quantify the penetration of topically applied substances into hair follicles.

This review discusses the application of liposomes in dermatology, highlighting their therapeutic value for drug stabilization, skin penetration enhancement, and treatment of hair follicle-associated disorders, but reports no new clinical results.

This review discusses the use of cosmetic nanocarriers to improve hair appearance and reports no new experimental results.