Acid Balm

Make a melee spell attack against a creature you touch. On a hit, you conjure fuming acid that boils over the target's body and deals 6d4 acid damage to the target. Until the spell ends, the target takes an additional 3d4 acid damage at the end of each of its turns.

A creature can end the spell on itself by using an action to do so.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the acid damage (both initial and later) increases by 1d4 for each slot level above 3rd.