Salicylic acid (beta hydroxy acid) in strengths of 1.8% to 3% is approved by the FDA as an over-the-counter treatment for psoriasis. Because BHA is a keratolytic, it can “unglue” skin cells and increase exfoliation, thereby removing the scaly buildup of psoriatic lesions. Sometimes simply using a well-formulated BHA product can be enough to keep psoriasis under control. It is also helpful when combined with other therapies, because by removing overproduced layers of skin BHA allows other topical medications to better penetrate skin. Finally, because of salicylic acid’s chemical relationship to aspirin, it has anti-inflammatory properties and can reduce the redness and inflammation associated with psoriasis. (Sources: Clinical Dermatology, July-August 2008, pages 380-386; and Journal ofthe American Academy of Dermatology, February 2006, pages 266-271.)
Salicylic acid is available in many forms, such as gels, lotions, creams, and liquids, and it is often combined with other topical medications to enhance their effectiveness. (Source: www. psoriasis. org). The primary concern in choosing a well-formulated salicylic-acid product is to be sure the concentration is stated clearly on the product, and that the pH of the product is no higher than 3.5.