photo of cakes and baking equipment clipped to a notice board


This box aims to give participants a hands-on activity which looks at the science used in everyday cosmetics. Learners will explore the science behind bath bombs by looking at the chemical equation and neutralisation reaction which takes place in the bath, all whilst creating their own bath bombs in the process.

Curriculum links

  • GCSE Science (Chemistry)

Equipment requirements

Please note, we encourage individuals to avoid unnecessary trips outside of the home where possible. Whilst some of the items below may need to be purchased to complete the activity, this can be done safely through a number of online retailers. To help in this regard, we have provided examples in the links below. Please note that Loughborough University does not accept responsibility for item stock availability through online retailers.

  • Citric Acid – An example can be purchased here
  • Sodium Bicarbonate – An example can be purchased here
  • Fragrance (optional)– An example can be purchased here
  • Liquid/food colour (optional) – An example can be purchased here
  • 2 cups for measuring ingredients
  • Tablespoon
  • Teaspoon
  • A mixing bowl
  • Mould(s)/Baking tray or something to put the completed bath bomb in
  • Coconut or vegetable oil
  • Water