This is a half pound of bath bomb & soap swirl topping that is big enough for 1 large tub bath or 2 regular size tub baths. Carefully use a cerrated knife to cut, or drop entire cupcake into tub, bottom will fizz and eventually top (soap) will float. When fizzing stops, enjoy a relaxing 30 minute soak. Bathe 1/2 way through and again at end of soak. You'll like how soft and smooth your skin will feel.