Final answer:
Unused chemical exfoliants should be disposed of properly to prevent harm to the environment and human health. It is best to take them to a hazardous waste facility or collection event. Always follow your teacher's instructions for disposal of chemicals.
Step-by-step explanation:
Unused chemical exfoliants should be disposed of properly to prevent harm to the environment and human health. One of the best ways to dispose of unused chemical exfoliants is to take them to a local hazardous waste facility or collection event where they can be safely managed and disposed of. Many chemicals cannot simply be washed down the sink as they can contaminate water sources. It is important to always follow your teacher's instructions for disposal of chemicals.