Usually people with oily skin are prone to acne growth. We recommend using soap with neutral PH value to wash your skin. Please make sure the soap you use is non deodorant as it might cause skin irritation on the face.
The best time to wash your face with soapy water is during shower. In the morning and evening. Soap water with neutral PH value are very effective in cleansing acne prone skin in a gentle way. You may also use dilute soapy water to wash your face when it feels oily. We do not recommend washing your face more than 5 times a day.
Be for sure to wipe your face dry with a clean towel. Always make it a habit to dry your towel where the sun could reach it.