Tennessee Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

Staphylococcus aureus is indeed a common bacteria that can significantly affect skin and hair health. This bacterium is known for causing a variety of skin infections, including boils, impetigo, and cellulitis. It can enter the skin through cuts, abrasions, or other openings, leading to inflammation, redness, and pus-filled sores, which can compromise the overall health of the skin. Since healthy skin is essential for the growth and quality of hair, infections from Staphylococcus aureus can also affect hair follicles, potentially causing hair loss and irritation.

In contrast, the other bacteria listed are less commonly associated with skin and hair issues. Escherichia coli is primarily linked to gastrointestinal infections, while Salmonella is often connected to foodborne illnesses. Clostridium species are known for causing serious conditions like tetanus and botulism, but are not typically associated with infections of the skin or hair in the same way as Staphylococcus aureus.