Yes, you can use salicylic acid every day. However, it is important to note that there are certain precautions and considerations when using this product. First of all, make sure the concentration of salicylic acid is safe for daily use (2% or less). Additionally, be aware that too much salicylic acid can cause dryness and irritation so start with a lower concentration if you have sensitive skin. Apply it sparingly as needed in areas affected by acne and/or oiliness; don’t apply it to your entire face. Lastly, always follow up with a moisturizer afterwards to replenish lost moisture in your skin.