Mechanism Overview: Inflammation as a Driver of Follicle Dysfunction Inflammation in the hair follicle is not always visible to the naked eye, but subclinical perifollicular inflammation has been documented in a significant proportion of patients with androgenetic alopecia, alopecia areata,…
Mechanism Overview: Blood Supply as a Growth Limiting Factor Vascular endothelial growth factor (VEGF) is the master regulator of blood vessel formation and a critical mediator of the vascular remodeling that accompanies each hair growth cycle. During anagen, the perifollicular…
Mechanism Overview: A Natural 5-Alpha-Reductase Inhibitor? Saw palmetto (Serenoa repens) is a small palm native to the southeastern United States whose berries have been used medicinally for centuries, primarily for urinary symptoms related to benign prostatic hyperplasia (BPH). In the…
Mechanism Overview: Peppermint Oil’s Surprising Follicular Effects Peppermint oil (Mentha piperita) is one of the most widely discussed natural remedies for hair growth, thanks largely to a single well-designed animal study that showed remarkable results. The primary active component of…
Mechanism Overview: The Hormonal Orchestra That Controls Hair Hair follicles are exquisitely sensitive to hormonal signals. They express receptors for thyroid hormones, cortisol, estrogen, progesterone, prolactin, and androgens—making them responsive to virtually every major endocrine axis. While the role of…
Mechanism Overview: More Than an Antifungal Ketoconazole is a synthetic imidazole antifungal agent that has been used for decades to treat fungal infections of the skin, including seborrheic dermatitis and dandruff. Its use in hair loss began with unexpected clinical…
Mechanism Overview: Stem Cells as the Follicle’s Renewal Engine Hair follicles are unique among mammalian organs in their ability to undergo cyclic regeneration throughout life. This remarkable capacity depends on… Read More →
Mechanism Overview: When Free Radicals Attack the Follicle Oxidative stress occurs when the production of reactive oxygen species (ROS) exceeds the capacity of cellular antioxidant defense systems to neutralize them. In the hair follicle, ROS are generated as normal byproducts…
Mechanism Overview: Zinc as a Follicle-Critical Cofactor Zinc is the second most abundant trace mineral in the human body (after iron) and serves as an essential cofactor for over 300 enzymes and approximately 2,000 transcription factors. In the hair follicle,…
Mechanism Overview: The Scalp as a Microbial Ecosystem The human scalp harbors a complex community of bacteria, fungi, viruses, and mites—collectively known as the scalp microbiome. This microbial ecosystem interacts… Read More →
