[Good thing it goes right over his pink little head.]

Yes, that's just from the- well, I probably shouldn't divulge such secrets out in the open. [He reaches in to scoop up a small amount of the dark, purplish substance, still emitting the fumes, and without thinking about what he's really doing, extends a hand out for Fionna to rest hers in.] But you'll see, it works like a charm.