The acne products im using work one week then make my skin dry and irritated the next. Is there a reason for this?

Chronic use. Decrease frequency from every day to every other day or first apply moisturizer to decrease strength. You also may want to change product from one containing benzoyl peroxide to one containing sulfur which is less drying. Acne supplements containing zinc are helpful, .
Nature of medicine. Medications that help acne typically dry up the overproduced skin oil so irritation flakiness, and drying are typical side effects.