Which type of solution is a topical dosage form containing pyroxylin and is dissolved in alcohol and ether?

A collodion is a topical dosage form that contains pyroxylin and is dissolved in alcohol and ether. An extract is the process by which active ingredients are removed from their source through the application of solvents. A liniment may be an emulsion, alcoholic, or oleaginous solution that is applied through rubbing. A spirit is an alcoholic or hydroalcoholic solutions containing volatile aromatic ingredients.