- Scent: Black Opium - Net Wt.: 7 oz. (This bomb is 2.75 inches in diameter and about the size of a tennis ball.) - Phthalate-Free, Paraben-Free, SLS-Free and Gluten-Free - Created by a pair of teenage sisterpreneurs™ - Handmade in the USA How to use: For some fizzy fun, simply fill your bath tub with warm water and drop in one fragrant bath bomb watch carefully as it dissolves because there's a fun surprise inside. Ingredients: sodium bicarbonate, citric acid, PEG-8, fragrance (parfum), yellow 6 lake.