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Hair Follicle Cycle

Meaning

The Hair Follicle Cycle is the genetically programmed, continuous sequence of growth, regression, and rest that every hair follicle undergoes repeatedly throughout an individual’s life. This cyclical process is composed of three distinct phases: anagen (the active growth phase), catagen (the short, transitional regression phase), and telogen (the resting phase). The cycle’s duration, health, and overall output are profoundly influenced by both local paracrine signals and systemic hormonal status.