Use Hetriva 9 transdermal patches exactly as prescribed by your doctor, usually once daily, on clean, dry, hairless skin of the upper or lower back, upper arm, or chest. Press the patch firmly onto the skin for at least 30 seconds to ensure proper adhesion. Do not apply it to broken, irritated, or wounded skin, and avoid contact with the eyes, mouth, or other mucous membranes. Replace the patch as directed by your doctor and rotate the application site each time to reduce skin irritation.