Henna's use predates its specifically wedding associated ritual elaboration, with the plant valued across a long history in South Asian, Middle Eastern and North African folk medicine and cosmetic practice for its cooling properties in hot climates, a practical origin that later ritual and devotional elaboration built upon rather than replaced, so that mehndi's decorative wedding tradition sits on top of a considerably older and more broadly utilitarian regional relationship with the henna plant itself.
Beyond weddings, mehndi is applied for numerous other Hindu, Sikh and Muslim festival occasions across the shared cultural region, including Eid celebrations in Muslim communities, Karva Chauth and other festivals in Hindu practice, and various Sikh celebratory occasions, reflecting the pattern's function as a broadly shared regional festive and celebratory custom rather than one confined strictly to weddings or to any single religious tradition's calendar. The craft of applying mehndi has itself become a specialised and often highly skilled profession, particularly for wedding occasions, where mehndi artists trained in elaborate regional design traditions, Rajasthani, Arabic and Indo Pakistani styles among the most widely recognised, are commissioned specifically for their artistic skill, a professionalised craft dimension that exists alongside mehndi's continuing devotional and folk medicinal roots.