6-OXO contains a naturally occurring aromatase inhibitor that is devoid of any direct hormonal or prohormonal activity (androgenic or estrogenic). It is what science refers to as a ""suicide inhibitor"" of aromatase. Specifically this means that it will irreversibly bind to the aromatase enzyme and permanently deactivate it. With prolonged use of 6-OXO the result will be a very substantial reduction in the production of estrogen in the body, along with a coinciding up-regulation of natural (testicular) testosterone production.

6-OXO contains a natural compound that combats estrogen formation. This is the first proven aromatase inhibitor, not some ineffective herb like chrysin or indole-3-carbinol that never delivered results.

Estrogen contributes to a host of unwanted side effects: water retention, gyno (bitch tits), testicular shutdown, and an overall smooth, soft look. So, to achieve and maintain a hard, muscular look, estrogen levels must be kept in check.