The first time you inhale the crisp, pine-like aroma of rosemary oil, you’re not just smelling a plant—you’re breathing in centuries of tradition, alchemy, and human ingenuity. This golden-hued elixir, extracted from the needle-like leaves of *Rosmarinus officinalis*, has been revered across civilizations, from the Roman baths of antiquity to the apothecaries of medieval Europe. […]