Final answer:
Salon emulsions, like shampoos and lotions, are examples of colloids called emulsions. These emulsions require an emulsifying agent to stabilize the mixture.
Step-by-step explanation:
Common salon emulsions, such as shampoos, lotions, and shaving creams, are examples of colloids called emulsions. An emulsion is a colloidal dispersion of a liquid in either a liquid or a solid. It requires an emulsifying agent, such as soap or an emulsifier, to stabilize the mixture.