Exploding? No, it's a wonderfully slow fizzing ball that floats unassumingly around the tub dispersing softness, aromatherapy, and tranquility. One is sufficient for a bath, but two are exuberant! Choose Essential Oil Scent: Small approx. 2.5 oz. Packaged in a biodegradable bag and a biodegradable paper ribbon color coordinating with the scent.