Michigan Esthetician State Board Practice Exam

What type of product is capable of destroying bacteria?

1. Antiseptic

2. Bactericidal

3. Disinfectant

4. Keratolytic

The correct answer is: Bactericidal

Bactericidal products are specifically designed to destroy bacteria. These substances work by attacking vital cellular components of bacteria, leading to their immediate death. This action is critical in many settings, including healthcare and personal care, where the elimination of harmful bacteria is essential to preventing infections and maintaining hygiene. Antiseptics, while they can reduce or inhibit the growth of bacteria on living tissues, do not necessarily kill all bacteria outright like bactericidal agents do. They are typically used on skin and mucous membranes to lower the risk of infection during wound care or surgical procedures. Disinfectants are similar in that they have the ability to kill bacteria but are primarily intended for use on inanimate objects and surfaces rather than living tissues. Therefore, while they also serve to eliminate germs, their function and application differ from that of bactericidal agents. Keratolytic products are actually designed to break down or exfoliate keratin, a protein found in the skin, and do not have any direct antibacterial action. Overall, the capability of bactericidal products to actively kill bacteria makes them the most effective choice in contexts where the complete destruction of bacterial populations is needed.