You may be suffering from overly dry skin for a variety of reasons - the acne treatment you're using is causing drying of the skin, or you naturally have dry skin. Whatever reason you may have for acne dry skin, it's important to treat your skin effectively to prevent the possibility of further acne breakouts.
Dry skin, commonly known as xerosis, is common under low humidity as well as cold weather. Winter time is when those with dry skin have their worst breakouts. You probably know how the majority of acne creams dry out the skin in order to treat acne - if you use these types of treatments, they will make your acne situation worse. Common symptoms of dry skin and acne include flaking and itching around the mouth and the nose. Cracked skin is more vulnerable to bacteria as well as acne, so it's important to use an effective moisturizer to combat dry skin.