Estro Block Pro (triple strength) is designed to support the clearing of toxic estrogens, while supporting the production of healthy estrogens. Both men and women are profoundly affected by estrogens. Some are natural, and some are what we call xenoestrogens which originate outside the body. The use of things like, plastics, pesticides, chemicals, bad fats and oils, processed foods, preservatives, and pollution, to name a few, have really altered our biochemistry. Most acne is caused by toxic estrogen buildup. These synthetic estrogens have also been known to contribute to cancers.