The Science4You bath globe factory from Trefl is an educational kit for children for self-experiments that can be done at home. Create your own colorful bath balls. Fun in the lab will answer many interesting questions... What actually are bath balls, who invented them and what did aspirin have to do with it? Do the balls actually need to be ball-shaped? Know the history of bathing, how she looked in ancient times when she was treated as a social event and when she was forbiddden. Discover what the balls have features, colours and fragrances. Know the scientific calculation of the balls: chemical reactions that occur in them and what makes them buzz in the water (eferwecencji). Find out what ingredients you need to add to your balls to change their colour, fragrance and properties. See how much effects your skin are having to take a bath with balls. Take the scientific challenge and see how the water temperature has on the ball dissolve!