Topical agents 

Topical agents are used locally, where the medicine is applied on the area being treated. For example creams, ointment and lotions are applied topically on the skin. Eye drops are instilled directly into the eyes.

Applying medication to the skin or mucous membranes allows it to enter the body from there. Medication applied in this way is known as topical medication. It can also be used to treat pain or other problems in specific parts of the body.

Most often topical medication means application to body surfaces such as the skin or mucous membranes to treat ailments via a large range of classes including creams, foams, gels, lotions, and ointments.

Face acids are exfoliants. They work to turn over layers of dead skin cells quicker than would happen on their own. That means facial acids can help make your skin smoother and brighter. They help fight acne.