Theobald's spiritual bond with abstraction and materiality acts as a vehicle to explore contemplative notions. Theobald uses beeswax as his primary medium. With compositions bearing beeswax drips, imprints and layered gestures, Theobald's unconventional adaptation of natural materials places him among artists challenging painting traditions. His work also engages with artistic concepts such as Monochrome painting and minimalism. Beeswax also coats his sculptures and works on paper.