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Polyquaternium 7® builds up on hair, improving its look and feel, and AFM is good for measuring these changes.

Hair restoration techniques have improved significantly.

This study found that using PRP with the FUE method of hair restoration led to better graft survival, aesthetic outcomes, and patient satisfaction compared to not using PRP.

This study suggests that a 1,550-nm fractional erbium-glass laser may stimulate hair growth in both an alopecia mouse model and human subjects with male pattern hair loss, though further research is needed to determine its clinical applications.

This article reviews factors affecting follicular unit extraction, emphasizing the need to tailor procedures to individual patient characteristics, but reports no new experimental findings.

This study found that storing hair follicle grafts in chilled ATPv-supplemented saline was most effective for preserving trichogenic gene expression, compared to other storage solutions and temperatures.

This study found that spermidine, a polyamine, plays an essential role in hair growth in sheep follicles, while spermine is not required for normal follicle function.

This study validated the differential stripping technique on hairless rat skin and found that the P-08–016 formulation delivered more finasteride to the epidermis and appendages compared to P-10–008.

This study observed that combining PRP and Tressfix Serum significantly improved hair regrowth and reduced microRNA expression linked to Chronic Telogen Effluvium compared to using either treatment alone.

This study found that PRP combined with dalteparin and protamine microparticles may enhance hair growth by increasing hair thickness compared to PRP alone.

This study found that a spermidine-based nutritional supplement increased the number of anagen phase hair follicles in healthy humans, suggesting potential benefits for hair loss conditions.

This paper reflects on the challenges and progress in hair restoration, highlighting ongoing efforts for improvement but providing no new empirical findings.

This study reports that using stamps to mark scalp incisions with gentian violet ink and a barrier film improved incision symmetry and maintained slot visibility for hair graft insertion in the frontal region.

In this study, researchers found that the lipid composition in hair significantly affects water diffusion and may explain differences in dyeing and cosmetic treatment responses between Asian and European hair, with CP2 fibers having more lipids than CP3 fibers.

This study observed that liposomes encapsulating minoxidil and PEP penetrate the skin at a slower rate but may reach deeper layers compared to a foam formulation.

This study developed mathematical models showing that heat penetrates individual hair quickly but takes longer to reach the center of hair bundles, helping understand potential damage from high-temperature styling tools.

This study found that applying a cosmetic active ingredient improved the Young's modulus of chemically damaged human hair fibers, suggesting enhanced mechanical properties compared to untreated fibers.

This study concluded that adding polymeric conditioning actives to shampoos improved color retention in permanently dyed hair, while additional cationic dyes at certain pH levels weakly dyed the hair directly.

Patient-reported hair improvements align with actual hair density changes, not hair width.

Method detects finasteride in plasma and semen with high sensitivity and accuracy.

This study found that prostaglandin metabolism enzymes are present in human hair follicles, suggesting a potential role in hair growth and differentiation, with some expression differences between men and women.

Hair properties change under electromagnetic fields and are influenced by individual characteristics and the environment.

This study observed that the Pilogics Hairegen device increased total hair count by 23.2% and terminal hair count by 21.1% in 289 patients with androgenetic alopecia after approximately 20 weeks of use, with no adverse effects reported.

In this systematic review and meta-analysis, PRP therapy significantly improved hair density and thickness for women experiencing hair loss, with mild and transient adverse effects, suggesting potential tailored treatment protocols based on dosage, injection duration, and ethnicity.

This study reported that a new two-point bending stiffness method effectively correlated with sensory assessments for hair styling gels but not for hair styling sprays, likely due to differences in polymer/hair composites.

This study reported that participants applying topical human platelet exosome extract serum experienced significant improvements in hair volume, density, scalp coverage, and overall hair health compared to a placebo, and no adverse effects were observed.

This study concluded that the follicular route is a significant pathway for delivering gentamicin through the skin, as demonstrated by higher drug permeation in non-plugged pig's ear skin compared to plugged skin.

This study measured estradiol and progesterone in the scalp hair of pre- and postmenopausal women using immunoassay, but found no statistical significance in hormone concentration differences between the groups.

This study found that 2.5 mg/day of oral finasteride was effective in improving hair density in women with female pattern hair loss, especially in those with early onset and longer treatment durations.

This study found that hair treated with a supplemental hair care product showed significantly higher absorption, deeper penetration, and reduced dryness compared to untreated and water-treated hair, as measured with 3D Raman spectroscopy.