Glossary Terms

A fundamental cell signaling pathway that drives cell growth and stem cell activation — in hair follicles, it’s the primary

The time between treatment periods in a crossover trial — needed to allow the first compound to clear the body

The international body that sets anti-doping rules in competitive sport — their Prohibited List determines which substances athletes cannot use.WADA

A protein that stimulates new blood vessel growth — essential for wound healing, but also the molecule that enables tumors

The primary receptor for nerve growth factor (NGF) — when activated, it tells neurons to survive, grow, and maintain their

The gap between the dose that helps and the dose that harms — a wide gap means more room for

The resting phase of the hair follicle — the growth phase is over, the follicle is dormant, and the hair

A comprehensive, structured review of all available evidence on a specific question — more rigorous and less biased than a

A measurable proxy used in a clinical trial instead of the actual health outcome you care about — useful for

The tissue layer just beneath the skin — where most research peptides are injected, using a short needle at approximately