The Role of Iron and Ferritin in Hair Follicle Function
Mechanism Overview: Iron as a Follicle-essential Mineral Iron is the most common nutritional deficiency worldwide, and its relationship to hair…
Category Science & Ingredients
Biotin and Hair Growth: Why Evidence Is Weaker Than Marketing Suggests
Mechanism Overview: What Biotin Actually Does in the Body Biotin (vitamin B7, also known as vitamin H) is a water-soluble vitamin that serves as an essential cofactor for five carboxylase… Read More →
The Role of DHT in Hair Follicle Miniaturization: A Molecular View
Mechanism Overview: How DHT Transforms Growing Follicles Dihydrotestosterone (DHT) is the central molecular villain in androgenetic alopecia (AGA), yet its…
The Biology of the Hair Growth Cycle: Anagen, Catagen, and Telogen
Mechanism Overview: The Three Phases of Follicle Cycling Every hair on the human body cycles through three distinct phases: anagen…
Finasteride and 5-Alpha-Reductase: How It Works
Mechanism Overview: Targeting the Enzyme That Produces DHT Finasteride is a synthetic 4-azasteroid compound that specifically inhibits type II 5-alpha-reductase, the enzyme responsible for converting testosterone to dihydrotestosterone (DHT) in… Read More →
How Minoxidil Works at the Cellular Level: K+ Channel Opening and VEGF
Mechanism Overview: Beyond a Simple Vasodilator Minoxidil was originally developed as an oral antihypertensive medication, and its hair growth-promoting effects were discovered serendipitously as a side effect. While often described… Read More →
The Science of Rosemary Oil for Hair: What Research Actually Shows
Understanding the Mechanism Rosemary oil (Rosmarinus officinalis) has become one of the most discussed natural approaches for hair health, but…
Glycosaminoglycans in Hair Growth The Hydration and Signaling System
Glycosaminoglycans: The Hydrated Matrix That Supports Hair Growth Glycosaminoglycans (GAGs) are long, unbranched polysaccharide chains composed of repeating disaccharide units.…
Insulin Resistance and Hair Thinning The Metabolic Connection
Insulin Resistance: A Hidden Driver of Hair Loss Insulin resistance — the condition in which cells become less responsive to insulin’s signals — is primarily associated with type 2 diabetes,… Read More →
Thyroid Hormone Receptors in Follicle Cycling and Hair Loss Causes
The Thyroid-Hair Connection: Beyond Simple Hormone Levels Thyroid disorders are among the most common medical causes of hair loss. Both…
Progesterone Receptors in Scalp Tissue How They Influence Hair Growth
Progesterone: More Than a Reproductive Hormone Progesterone is primarily known as the hormone of pregnancy and the menstrual cycle, but…
Extracellular Matrix Remodeling in Follicle Regression Process
The Extracellular Matrix: The Follicle’s Structural Foundation Hair follicles do not float in empty space — they are embedded in…