Acne is caused by oil-clogged pores that attract bacteria and become inflamed. Much of the imbalance of oil is caused by fluctuations in hormones. For women this is a common side-effect of both pregnancy and menopause. Look for gentle cleansers to unclog pores that won’t trigger further reactions. For treatment creams turn to products that offer further cleaning without overly drying the skin. This can cause the oil glands to over produce.