Salicylic acid can be effective in treating milia, but its efficacy may vary depending on the severity and underlying causes of the condition. Milia are small, white bumps that form when dead skin cells become trapped in the pores. Salicylic acid is a beta hydroxy acid (BHA) that exfoliates the skin, helping to remove the buildup of dead skin cells and unclog pores.

By exfoliating the skin, salicylic acid can help to loosen and remove the trapped keratin and dead skin cells that contribute to the formation of milia. Regular use of salicylic acid can also help prevent new milia from forming.

However, it's important to note that milia can have various causes, including genetics, hormonal imbalances, and certain skincare products. If you have persistent or severe milia, it is advisable to consult with a dermatologist who can provide a proper diagnosis and recommend the most suitable treatment options for your specific situation.