Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Salicylic acid is a beta-hydroxy acid commonly used in dermatology for its keratolytic (exfoliating) and comedolytic properties. Its use in supporting or treating dermatitis, particularly seborrheic dermatitis and hyperkeratotic forms (such as chronic eczema or psoriasis), is supported by scientific evidence, though mainly as an adjunctive therapy rather than a primary treatment. Clinical studies and dermatology guidelines recognize salicylic acid for its ability to soften and remove scales, reduce skin thickening, and enhance the penetration of other topical medications. In seborrheic dermatitis, for example, salicylic acid shampoos or creams help decrease scaling and assist with symptom management. However, its use in atopic dermatitis or acute inflammatory dermatitis is limited, as salicylic acid can be irritating and may worsen inflammation in sensitive or damaged skin. The overall quality of evidence is moderate; most studies are small, and salicylic acid is typically evaluated as part of combination regimens. Major dermatological references and guidelines mention salicylic acid as an option for hyperkeratotic or scaling dermatoses, but not as a first-line therapy for dermatitis broadly. In summary, there is scientific support for its use in certain forms of dermatitis, particularly those with prominent scaling, but evidence is stronger for adjunct or symptomatic use rather than as a standalone treatment.

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