Scientists, studying skin microbes, have identified three unique strains of the bacterium P. acnes., all of which are found on the skin. These bacteria break down lipids, resulting in a low skin pH. This low pH is alkaline in nature and makes the environment unfavorable to invading bacteria.

Question

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The low pH resulting from the breakdown of lipids by P. acnes on the skin is acidic, not alkaline. Acidic conditions are what make the environment unfavorable to many invading bacteria, not alkaline conditions.

Scientists, Studying Skin Microbes, Have Identified Three Unique Strains of the Bacterium