Which statement correctly distinguishes antiseptics from disinfectants?

The statement that antiseptics are safe for skin use while disinfectants are intended for surfaces accurately captures the fundamental distinction between these two categories of substances. Antiseptics are typically formulated to be applied on living tissues, such as skin or mucous membranes, to reduce the risk of infection by killing or inhibiting the growth of pathogens. They are designed to be non-toxic and safe for direct application on the body.

On the other hand, disinfectants are stronger chemicals that are used primarily on inanimate surfaces. They are effective at eliminating a wide range of microorganisms but are not safe for use on skin due to their potential to cause irritation or chemical burns. This distinction is critical in infection control practices, as the appropriate use of these agents helps ensure safety and effectiveness in preventing infections in healthcare settings and everyday life.

Focusing on the other statements reveals their inaccuracies: instruments are usually disinfected rather than treated with antiseptics; disinfectants are not safe for skin application; and both substances have distinctly different purposes and safety profiles, ruling out the notion that both are safe for skin use at different dosages. Understanding this difference is essential for proper infection control practices.