What bath bomb is this?

guys I already used the bath bomb but found this soap like thing (I think it’s soap 😅) but does anyone know what bath bomb this could be from? I think it was in the shape of a skull? It was like a light blue and white I think? It smelled Minty and refreshing. I really want to know because I’d love to get another! I got this as a freebie when they delayed my order.