To develop a sprayable solution with active ingredients that will leave a film on skin. We are examining a set of film forming solutions. The solutions are prepared by dissolving a polymer in an appropriate solvent. Then active ingredient is mixed into the polymer solution at room temperature and elevated temperature. The physical properties of the films formed by spraying the solutions on a substrate will be investigated. The release characteristics of the drug into simulated fluids or into a buffer solution will also been studied.
Application of Transdermal Technology to Health Care Products Manufactured in Hong Kong