Douches are liquid pharmaceutical preparations intended for application into body cavities such as the vagina, nasal passages, or rectum for cleansing, antiseptic, or therapeutic purposes. In pharmaceutics, they are classified as external liquid dosage forms designed to remove secretions, debris, or microorganisms and sometimes to deliver medicaments directly to mucosal surfaces. These preparations are generally supplied either as ready-to-use solutions or as concentrated liquids or powders that must be diluted with water before administration. Vaginal douches are the most commonly known type and are used to cleanse the vaginal canal or to administer antiseptic, astringent, or deodorizing agents. They may contain substances such as mild antiseptics, weak acids like acetic acid, or buffering agents to maintain or restore the