Which of the following is a characteristic feature of antiseptics?

Antiseptics are specifically designed for use on living tissues, which makes their safety a defining characteristic. These substances are utilized to reduce the possibility of infection, sepsis, or putrefaction by inhibiting the growth of microorganisms on skin or mucous membranes. Their formulation allows them to be applied without causing significant harm to the body's cells, distinguishing them from other types of disinfectants that may be too harsh for use on living tissues.

While some antiseptics can be toxic if overused and may have concerns about safety or efficacy, the primary reason for their development and use is their ability to be safely applied to areas of the body without causing adverse effects. Thus, the focus on their safe application on living tissue is paramount in understanding antiseptic properties and their role in a practice such as electrology, where skin integrity is essential.