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Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.

Using a microscope during hair transplants cuts damage to follicles in half and could improve hair growth.

This study used novel methods to detect and map iodine concentrations in pig skin, finding iodine present in the coating, stratum corneum, and tissue around hair follicles.

This article reports electron microscope studies on the structure of hair and wool, but it does not present new clinical findings.

In this study, fetal rat wounds at gestational age 16 days healed without scar formation and resembled normal skin architecture, unlike those at 18 days which resulted in scarring and lack of hair follicles.

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.

This review discusses the development and application of multiphoton microscopy in dermatology, highlighting its advantages and potential future research directions without reporting new clinical results.

This study found that the TrichoScan method detected significant increases in hair counts and cumulative hair thickness in men after finasteride treatment, suggesting its potential for monitoring hair treatment responses.

This study developed an objective standard grading system for evaluating hair damage using scanning and transmission electron microscopy.

This study highlights confocal microscopy as a promising, minimally invasive tool for assessing hair morphology and internal structures, making it valuable for cosmetic hair assessments.

This study found that using a dissecting microscope for follicular unit graft preparation in hair transplant surgeries increased hair yield by 17% compared to using magnifying loupes with transillumination.

This review highlights the light microscopic features of various infectious and non-infectious hair conditions and reports no new clinical results.

This study observed that hair casts, seen in girls with tightly drawn hairstyles, may result from local circulatory disturbances and scalp inflammation.

This case report describes a 6-year-old girl diagnosed with monilethrix despite no familial history and treated with a topical minoxidil trial.

This review discusses the role of hair microscopy in diagnosing alopecia, stating that while it excludes diagnoses related to hair breakage, it only confirms nonspecific short anagen in alopecia cases.

This case study describes a 14-year-old girl with pili annulati who had fragile hair, which may be due to cavities within the hair shafts as seen in electron microscopic examinations.

This study found that mesenchymal cell processes from the dermal papilla contact epithelial hair matrix cells through gaps in the basal lamina during hair matrix cell differentiation in mouse vibrissa follicles.

Polarized microscopy is a quick and free method to correctly identify types of hair loss.

Hair transplant complications were likely due to deep graft placement and rough handling.

This article discusses aspects of evaluating patients with androgenetic alopecia for hair transplantation and reports no clinical results.

This study found that multiphoton microscopy effectively visualizes the microstructure of in vivo mouse skin, offering a clear view of various skin layers and components like corneocytes and collagen fibers.

This retrospective review of hair samples from pediatric patients indicated that microscopic hair examination might be a useful first-line investigation for diagnosing various genetic conditions.

In this study, researchers showed that multiphoton microscopy with fluorescent protein tagging enables single-cell imaging and tracking in live transgenic mice, offering new insights into cell dynamics in stem cell research compared to traditional histological methods.

Confocal Laser Scanning Microscopy (CLSM) is a useful tool for studying how drugs interact with skin and diagnosing skin disorders, despite some limitations.

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 found that using a combination of video microscope for slivering and loupe magnification for graft-cutting in hair transplants achieved nearly double the graft productivity with similar transection rates compared to using only a digital video microscope.

Isolated patchy heterochromia with pili annulati can occur without other health issues.

This study discovered previously unknown structures in human hair shafts that may stabilize hair structurally and physicochemically.

This study used multiphoton microscopy to successfully visualize rabbit skin microstructure, highlighting its noninvasive potential for future skin research related to diseases and wound healing.

Mice hair follicles take in the amino acid cystine.