A device for the transdermal administration of nicotine comprises a backing layer, a drug reservoir layer containing nicotine carried by said backing layer, and means for maintaining the device in nicotine transmitting relationship with the skin. The the device absorbs less than 48.6% of incidental light passing through the device so as to permit the natural skin colour of the subject to whom the device is applied to be visible through said device, and is effective for nicotine replacement therapy under exposure of the device to light.
