An antiseptic is a product which eradicates or prevents the development of bacteria or viruses. Antiseptics are used on the surface of the body, the term disinfectant is used for medical equipment and other surfaces. An antiseptic can be a fungicidal, against fungi, bactericidal, against bacteria, virucidal, against viruses, or sporicidal, against spores, but in general combines all of these functions. Antiseptics are applied locally on the affected zone. A strict antisepsis is necessary before any surgical intervention and requires a particular protocol and precautions to avoid germs entering the body.