Evidence supporting the use of: Acetic acid
For the health condition: Acne

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Acetic acid, the main component of vinegar, has been investigated for its antibacterial properties, including potential effects on skin conditions like acne. Scientific studies have shown that acetic acid possesses antimicrobial activity against Propionibacterium acnes (now Cutibacterium acnes), the bacteria associated with acne development. In vitro studies have demonstrated that acetic acid can reduce bacterial load, and some small clinical studies and case reports suggest that topical application of diluted acetic acid solutions (such as apple cider vinegar) may improve mild acne by reducing bacterial colonization and altering skin pH. However, robust clinical trials are lacking, and safety concerns exist regarding skin irritation and chemical burns, especially when used in high concentrations or without proper dilution. Current dermatological guidelines do not recommend acetic acid as a first-line or standard treatment for acne due to limited evidence and safety data. Thus, while there is a scientific rationale and some preliminary evidence supporting its antibacterial effects, the quality and quantity of clinical research remain insufficient for strong recommendations.

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