Bigby's Bubble Bath Bombs

Bigby often traveled with adventurers who felt that hygiene was merely optional; Bigby begged to differ.

Ten small balls of soap appear in your hand and are infused with magic for the duration. A creature can take a Bonus Action to throw one at a point within range. An ephemeral burst of soapy suds and pleasant smelling perfume splashes on everything within a 20-foot-radius Sphere from where it lands, cleaning all creatures, objects and surfaces to a spotless shine. A creature may make a Dexterity saving throw to avoid being washed involuntarily.

Using a Higher-Level Spell Slot. The radius increases by 20 feet for each spell slot level above 2.