CREATE SOAP, BATH BOMBS & BATH SALTS: This innovative STEM.org Authenticated 3-in-1 Spa Science Lab kit for kids is the best gift for your child that loves crafts and science. Includes a beautifully illustrated learning guide so that any child can follow along. 100% SAFE: All the ingredients meet or exceed all safety standards and are 100% safe to put in your child's bath. CREATE 10 SOAPS: Mix the wax, coloring, fragrance, and glitter, and pour into the 4 lovely molds to create beautiful soap to use and display. Mix and match colors to your heart's content and create multi-colored layered soaps. CREATE 10 BATH BOMBS: Mix the citric acid, baking soda, Epsom salt, baby oil, coloring, and fragrance and pour into the 5 molds to create fizzy bath bombs (don't forget to bury the surprise charms inside!) to use in your tub. Mix and match colors and create multi-colored layered bath bombs.