"Bath Bomb Lab", a kit that allows you to make handmade bath bombs (carbonated bath salts), will be released by Gakken Stayful in late October. The price is 3,000 yen (excluding tax).
A kit that allows you to make a bath bomb in 3 steps: "mixing", "hardening", and "drying" using baking soda, citric acid, and water. The main body, spray bottle, measuring spoon, drying stand, etc. are included in the set. Baking soda and citric acid need to be prepared separately. The size of the resulting bath bomb is 50 mm in diameter, and when you take a bath, it becomes a squishy carbonated bath. A recipe book is also included, which introduces how to make a bath bomb according to the season and event.
The target age is 15 years old and over. The size of the package is H250 x W160 x D106 mm, and the main body is H180 x W95 x D95 mm.