As recorded in the Shennong Ben Cao Jing, Lithospermum erythrorhizon—characterized by its cold nature and sweet-salty taste—enters the heart and liver meridians. It is adept at cooling and invigorating the blood, clearing heat and toxins, and relieving rashes and bacterial infections. Traditionally used to treat heat-induced abscesses and chapped skin, its external application has proven highly effective in skin repair, alleviating dryness and sensitivity. In fact, the well-known Zi Cao ointment for scar removal, itch relief, and skin regeneration is predominantly composed of this herb.