Yes, you can use a body wash containing salicylic acid to help treat body acne. Salicylic acid is a beta hydroxy acid that exfoliates the skin, unclogs pores, and reduces inflammation, making it effective in addressing acne on the body. However, it's important to patch-test the product first to ensure your skin doesn't react adversely. Additionally, it's recommended to start with a lower frequency of use, such as a few times a week, and gradually increase if your skin tolerates it well. Remember to moisturize your skin afterward, as salicylic acid can be drying. If you have any concerns or pre-existing skin conditions, it's advisable to consult with a dermatologist before incorporating salicylic acid into your skincare routine.