What Is Colon Hydrotherapy? Colon hydrotherapy is sometimes referred to as colonics, colon irrigation, colon therapy, or simply, an extension of an enema. It is a gentle infusion of filtered, purified and temperature-controlled water into the rectum. The Benefits of Colon Hydrotherapy • Cleanses (eliminate toxic waste from the body) • Re-hydrates • Re-tones Colon Wall • Improves Nutrients Absorption • Improves Colon Functions (nutrients absorption and regularity)