research Hormonal Regulation of Hair Follicles Exhibits a Biological Paradox
Androgens can both stimulate and cause hair loss, and understanding their effects is key to treating hair disorders.
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research Thymosin Beta 4 Increases Hair Growth by Activation of Hair Follicle Stem Cells
Thymosin β4 promotes hair growth by activating stem cells in hair follicles.
research 55 Cases of Allergic Reactions to Hair Dye: A Descriptive, Consumer Complaint-Based Study
Many people had severe allergic reactions to a common hair dye ingredient, causing them to seek medical care and miss work.
research Human Hair Follicle: Reservoir Function and Selective Targeting
The human hair follicle can store topical compounds and be targeted for drug delivery with minimal side effects.
research Friction and Wear Studies of Human Hair and Skin
Human hair and skin friction vary by ethnicity, hair type, and environmental conditions.
research Genetic Ablation of the CDP/Cux Protein C Terminus Results in Hair Cycle Defects and Reduced Male Fertility
Mutant CDP/Cux protein causes hair defects and reduced male fertility in mice.
research Elemental Hair Analysis: A Review of Procedures and Applications
Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.
research Size-Dependent Penetration of Nanoemulsions into Epidermis and Hair Follicles: Implications for Transdermal Delivery and Immunization
Smaller nanoemulsions can penetrate skin and hair follicles better, which may be useful for delivering drugs and vaccines through the skin.
research Hair Follicle Regeneration Using Grafted Rodent and Human Cells
Grafted rodent and human cells can regenerate hair follicles, but efficiency decreases with age.
research A Role for p75 Neurotrophin Receptor in the Control of Apoptosis-Driven Hair Follicle Regression
The p75 neurotrophin receptor is important for hair follicle regression by controlling cell death.
research Hair Follicle Stem Cell Differentiation Is Inhibited Through Cross-Talk Between Wnt/β-Catenin and Androgen Signaling in Dermal Papilla Cells From Patients With Androgenetic Alopecia
Androgens block hair growth by disrupting cell signals; targeting GSK-3 may help treat hair loss.
research Control of Hair Follicle Cell Fate by Underlying Mesenchyme Through a CSL–Wnt5a–FoxN1 Regulatory Axis
Notch/CSL signaling controls hair follicle differentiation through Wnt5a and FoxN1.
research Shape Variability and Classification of Human Hair: A Worldwide Approach
Human hair can be classified into eight types based on physical features, not ethnicity.
research Genome-Wide Association Meta-Analysis of Individuals of European Ancestry Identifies New Loci Explaining a Substantial Fraction of Hair Color Variation and Heritability
New genetic locations explain much of hair color variation in Europeans.
research Delivery and Targeting of Nanoparticles into Hair Follicles
Nanoparticles can improve skin treatments by better targeting hair follicles, but more research is needed for advancement.
research Hair Follicles Contribute Significantly to Penetration Through Human Skin Only Shortly After Application as a Solvent Deposited Solid in Humans
Hair follicles greatly increase caffeine absorption through the skin shortly after it's applied.
research Epidermal Growth Factor as a Biological Switch in Hair Growth Cycle
EGF controls hair growth by regulating hair follicles' growth phases.
research Effects of Epidermal Growth Factor on the Morphology and Patterns of DNA Synthesis in Isolated Human Hair Follicles
EGF makes hair follicles grow longer but stops hair production.
research Ozone Interactions with Human Hair: Ozone Uptake Rates and Product Formation
Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.
research Cloning of Wrinkle-Free, a Previously Uncharacterized Mouse Mutation, Reveals Crucial Roles for Fatty Acid Transport Protein 4 in Skin and Hair Development
Fatty acid transport protein 4 is essential for skin and hair development.
research Self-Activated Electrical Stimulation for Effective Hair Regeneration via a Wearable Omnidirectional Pulse Generator
A wearable device using electric stimulation can significantly improve hair growth.
research Self-Organization Process in Newborn Skin Organoid Formation Inspires Strategy to Restore Hair Regeneration of Adult Cells
Newborn mouse skin cells can grow hair and this process can be recreated in adult cells to potentially help with hair loss.
research A Meeting of Two Chronobiological Systems: Circadian Proteins Period1 and BMAL1 Modulate the Human Hair Cycle Clock
BMAL1 and Period1 genes can influence human hair growth.
research Efficacy, Safety, and Tolerability of Dutasteride 0.5 mg Once Daily in Male Patients with Male Pattern Hair Loss: A Randomized, Double-Blind, Placebo-Controlled, Phase III Study
Dutasteride 0.5 mg daily improves hair growth safely in men with hair loss.
research Bone Morphogenetic Protein Signaling Regulates the Size of Hair Follicles and Modulates the Expression of Cell Cycle-Associated Genes
BMP signaling controls hair follicle size and cell growth by affecting cell cycle genes.
research Gene Expression Profiling Gets to the Root of Human Hair Follicle Stem Cells
Human hair follicle stem cells can be isolated using specific markers for potential therapeutic use.
research Towards Dissecting the Pathogenesis of Retinoid-Induced Hair Loss: All-Trans Retinoic Acid Induces Premature Hair Follicle Regression by Upregulation of Transforming Growth Factor-β2 in the Dermal Papilla
All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.
research Hair Loss in Women with Hyperandrogenism: Four Cases Responding to Finasteride
Finasteride improves hair loss in women with hyperandrogenism.
research Topical Application of Polygonum Multiflorum Extract Induces Hair Growth of Resting Hair Follicles Through Upregulating Shh and β-Catenin Expression in C57BL/6 Mice
Polygonum multiflorum extract helps grow hair by activating certain hair growth signals in mice.
research Hair Evaluation Methods: Merits and Demerits
Different hair evaluation methods have their own pros and cons, and using multiple methods together is best for accurate hair loss diagnosis and tracking.