During the Second World War, military and civilian duty gas masks were issued with anti-dim outfits that contained red turkey oil to be smeared on the eye pieces to prevent them from fogging up. The cheaper civilian gas masks did not come with one of these outfits and civilians were recommended to use toilet soap and place it over the eyepiece to prevent it from steaming up. Sensing a gap in the market, some enterprising manufacturers started producing small anti-dimming sets for the civilian market so people who wished could buy a set themselves. These sets never seem to have been hugely popular so surviving civilian anti-dim sets are rare and today we are looking at one example, a small glass vial of what I believe from the colour to be the same red turkey oil used in military sets:

To protect the vial, it comes in a small metal cylinder with a screw cap. The bottle itself has a rubber screw cap to keep the contents secure. The vial has a paper label that indicates the contents, manufacturer and instructions on use:

This bottle is tiny, barely 2″ long, however it would likely have been so rarely used and the amount needed to wipe over the face piece of a civilian gas mask was so tiny that it would be more than sufficient for any civilian use it might have been subjected to. Luckily gas was never used against the people of the United Kingdom so outside of training exercises, this would never have been needed. Here we see a wartime exercise and all four of the most common respirators can be seen being worn- civilian, civilian duty, general service and children’s respirators: