Perobar 2.5% Soap (75 gm) should be used as directed by your doctor or according to the product instructions. It is commonly recommended for acne management regularly, often once daily, rather than only once a week. The exact frequency depends on your skin type, sensitivity, and acne severity. If you are starting it for the first time, you may begin with less frequent use (such as every other day) to check tolerance, and then increase gradually if suitable. Overuse can lead to dryness, redness, irritation, or peeling, so monitoring your skin’s response is important.