Dating back to the Spring and Autumn period (770–476 BCE) in China, Xiang Nang were worn as protective talismans, status symbols, and personal fragrances by scholars, nobles, and healers. Historically, they warded off seasonal pathogens, insects, and "bad qi" during epidemics—hung at bedposts, tucked into sleeves, or carried as courtly accessories.
Modern science supports what ancient practice observed: grinding and heating aromatic herbs releases volatile organic compounds (VOCs)—including terpenes, camphor, and eucalyptol—which studies show can have antimicrobial, anti-inflammatory, and mood-regulating effects. When inhaled, these compounds interact with olfactory receptors connected directly to the limbic system (the brain's emotional and memory center), which may explain their reported calming or clarifying properties.
Culturally, Xiang Nang also carried romantic symbolism—lovers exchanged handmade sachets as quiet expressions of devotion. Today, they remain a living bridge between TCM wisdom, botanical neuroscience, and wearable art.