Sydney Sweeney is the face of a limited edition Dr. Squatch soap bar, and her bathwater is listed as an ingredient.

Gwen Stefani sang about bathing in it, and now it’s actually becoming a thing, thanks to one euphoric actress.

The medium-grit soap is made from pine bark extract, exfoliating sand and droplets of the “Euphoria” star’s bathwater. The scent -- in a nod to Sweeney’s Pacific Northwest roots -- combines pine, Douglas fir and earthy moss…and perhaps a trace of Sweeney herself?