Which of the following is commonly used as an antiseptic in nail salons?

The correct answer is hydrogen peroxide, which is commonly used as an antiseptic in nail salons due to its effective properties in killing bacteria and fungi. It works by releasing oxygen when applied to the affected area, creating an environment that is hostile to pathogens. This makes it a suitable choice for disinfection purposes in a salon setting, where maintaining a sterile environment is crucial for preventing infections and ensuring client safety.

While alcohol is also an effective antiseptic, it is primarily used as a disinfectant for surfaces or tools rather than directly on skin or nails in a salon context. Bleach, although a strong disinfectant, is too harsh for use directly on skin or nails, and its strong chemical properties can lead to skin irritation. Aloe vera gel is known for its soothing properties and is often used for moisturizing or healing rather than antiseptic purposes. Thus, hydrogen peroxide stands out as the appropriate antiseptic choice for use within nail salons.