What should be done with any unused product during a manicure service?

During a manicure service, any unused product should be discarded. This practice is crucial for maintaining sanitation and preventing contamination. Products that have been used during a treatment, even if not fully consumed, can harbor bacteria or other pathogens. Therefore, to ensure a hygienic environment for each client and to comply with health regulations, it is essential to dispose of any unused product rather than attempting to store it for future use or giving it to the client.

In terms of the other options, storing unused product in a cupboard may lead to potential cross-contamination or spoilage. Giving unused product to a client could raise health and safety concerns as it has been in the salon environment. Saving product for the next client is also not advisable because the integrity of the product cannot be guaranteed, and it could have been contaminated during the initial use. Hence, discarding unused product is the correct and best practice during salon services.