The effectiveness of salicylic acid depends on its intended use. For acne treatment, products containing 1 to 2 percent salicylic acid are considered effective. This concentration helps exfoliate the skin, unclog pores, and prevent future breakouts. However, for wart removal, products containing 17 percent salicylic acid are often recommended. This higher concentration is necessary to effectively penetrate the wart and break it down.
Ultimately, the most effective percentage of salicylic acid will vary depending on your specific needs and the product's intended use. Always consult with a dermatologist for personalized advice.