Not all acne is equal: Scientists reveal strains of C. acnes that promote skin health

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Cutibacterium acnes, a bacteria that is known to cause acne, is also widely spread on people with healthy skin. Recent advances in gene sequencing have shown that differences in the genetic background between strains of bacteria may lead to differing roles in the skin. A new study, done without animal (mammal) testing, shows that the nonpathogenic strain of C. acnes improves the skin's resistance against the infection-causing bacteria Staphylococcus aureus.

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