Stained Underwear is a kinetic sculpture and performance piece that sheds light on the stigmatized and under-discussed topic of period care. Real-time period data - the time and effort Pepi spend on period care each day during their fifteen day long period - is visualized by seven sinks with robot arms scrubbing their period-stained underwear. By bringing period data from behind closed doors into public spaces we want to reclaim the power of the body, flesh and blood against the existing patriarchal structures of Period Tax, and the lack of free access to menstrual products.