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This study found that scalp hair follicles had higher expression of cytokeratin 15 and distinct hair layers compared to other body regions, highlighting differences in hair follicle characteristics.

This study found that scalp thickness and hair follicle depth were reduced in individuals with androgenetic alopecia, and MRI signal intensity was higher compared to those without the condition.

Balding men have harder scalps.

This study found that sodium and potassium levels in scalp hair might be sex-specific indicators, while females had slightly higher copper and iron levels, particularly during the reproductive period.

This review from JAAD highlights disparities in the effectiveness of hair preservation techniques for Black women undergoing chemotherapy, noting that current methods like scalp cooling often underperform due to structural differences in Black hair, and recommends tailored strategies such as adjusting hair preparation before treatment.

This study found that patients with androgenetic alopecia showed distinct scalp bacterial imbalances compared to healthy individuals, which were associated with unhealthy lifestyles. These microbial changes might contribute to follicular inflammation, potentially accelerating hair loss in these patients.

In this pilot study, both tofacitinib and methotrexate improved alopecia areata outcomes, but tofacitinib showed greater efficacy in achieving significant SALT score improvement after 6 months, although the difference was not statistically significant.

This study found that frontal fibrosing alopecia had higher long-term remission rates compared to lichen planopilaris, highlighting differences in their clinical presentations and outcomes.

This study found a significant correlation between aerobic and anaerobic bacteria in the scalp microbiome and female androgenetic alopecia, with notable prevalence differences in specific bacterial groups between affected and non-affected women.

In this study, a Finnish functional ingredient called SpruceSugar™ was found to slightly reduce scalp oil (sebum) and water loss compared to a control over four weeks, although differences were not statistically significant. Both study groups experienced similar improvements in scalp moisture.

Changes in scalp bacteria are linked to female hair loss, suggesting new treatment options.

This study analyzed scalp hair proteins from healthy children and their mothers, finding that non-structural proteins could serve as promising biomarkers for understanding long-term developmental changes and health status linked to early childhood experiences.

This study found that scalp cryotherapy significantly protected against hair loss during chemotherapy and for two months after, with various factors influencing hair regrowth in breast cancer patients.

In this study, researchers observed that estrogen and its receptors play a crucial role in hair growth and control, with notable sex-dependent differences in human scalp hair follicles.

This study suggests that morphometric analysis using horizontal sectioning of scalp biopsies is effective for diagnosing alopecia in Koreans, but follicular count differences from Caucasians should be considered.

In this study, both endoscopic and pretrichial open forehead lifts were found to significantly elevate eyebrows long-term, with high patient satisfaction reported, showing no significant difference between the two methods.

This study observed that different hair types on Tianzhu white yaks have similar ultrastructures, but coarse hair fibers show distinct structural differences across body parts.

In this study, researchers observed that aroma oil-enhanced scalp scaling significantly improved scalp conditions over 8 weeks, marked by increased water and oil content, reduced keratin and surface value, and higher satisfaction in hair-related outcomes compared to the control group.

This study observed a tendency for patients with frontal fibrosing alopecia to have more androgen receptors in their scalp than healthy controls, though this difference was not statistically significant.

In this study, the authors reported no significant difference in sexual dysfunction between finasteride users and non-users among men with androgenetic alopecia, suggesting that finasteride does not cause sexual dysfunction. This finding aligns with other large survey-based studies.

Addressing biological changes in lipids, metabolism, and microbiota may help treat hair loss in young Chinese females with oily scalps.

This review explores the clinical characteristics, risk factors, and treatment challenges of scalp basal cell carcinoma, noting its potential aggressiveness and difficulty in treatment, but reports no new clinical results.

This study found that the stratum corneum of scalp skin in humans has distinct functional characteristics compared to the facial skin and volar forearm, including higher hydration levels and intermediate epidermal turnover rates.

This review discusses the influence of menopausal status on hair parameters in women without alopecia, finding significant differences in hair growth rate, percentage anagen, and hair diameter distributions, particularly in the frontal scalp.

The research observed that a penguin cap scalp cooling system may effectively reduce chemotherapy-induced alopecia, though its success varies due to individual characteristics and treatment regimens.

This study observed that donor strip scar width after hair transplantation was correlated with preoperative scalp laxity and elasticity but not with glidability.

This study analyzed patch test results to identify allergens causing scalp contact dermatitis, finding nickel, cobalt, and balsam of Peru among the most common in the patient population.

In this study, researchers characterized the normal scalp hair properties in South Koreans, observing that hair density declined with age and varied across scalp sites, while hair thickness patterns remained relatively stable until later in life.

This systematic review found inconclusive evidence on the effectiveness of botulinum toxin for treating alopecia and highlighted the need for further prospective randomized controlled trials.

Scalp dermal papilla and fibrous sheath cells have different MMP expression than scalp dermal fibroblasts.