For example, here is the label from a medicine used to treat colds and flu:
When a manufacturer produces a medicine, it is important that the substances it contains are mixed together in the correct quantities. This is important because otherwise the medicine will not be at the right strength to be effective.
The manufacturer will follow a recipe to make sure of this. In chemical terms, the recipe to make substances in industry is called a formulation.
Here are some examples of where formulations are used in everyday products:
|Paint||Pigments or dyes||Give the paint its colour|
|Paint||Solvent||Makes the paint a liquid so that it can be used more easily|
|Perfume||Fragrances||Give the perfume its characteristic smell|
|Perfume||Solvent||Bring all the odorants together in a single liquid|
|Sunscreen||Ultraviolet filter||To block out harmful radiation from the sun|
|Sunscreen||Moisturiser||To keep the skin hydrated|
|Processed foods||Ingredients||Chosen for the food being made|
|Processed foods||Salt||To enhance the flavour of the food|
|Processed foods||Preservatives||To increase the shelf life of the food|