A defining aspect of Hiermann’s work is his openness to interdisciplinary collaboration. His projects often involve artists from different fields, including sculpture, fashion, and visual arts. The fragrance Genesis, for example, was developed through an exchange with sculptor Tereza Štětinová, while Azabache captures the creative vision of a young Spanish designer working in Paris.
His technical skill becomes evident in compositions such as Ad Libitum, where fresh citrus notes transition into a floral-woody heart and settle into a structured chypre base. This balance between familiarity and innovation allows his fragrances to feel both rooted in tradition and distinctly modern.
Today, under his own label J. F. Hiermann, he focuses on bespoke fragrances and limited editions. His first release, Amulet, blends spiritual materials such as oud and palo santo with classical fougère elements, marking a move toward more artisanal and exclusive creations. This shift reflects his focus on carefully selected ingredients and individualized compositions that convey both his artistic direction and his cultural background.