To think, and itching powder, that joke shops sold, was fibreglass. The needle like structure of it could see it being regarded in the same way as asbestos, and in the future.
Where can I find a reference to fibreglass being used as itching powder? The only thing I found online was about rose hips and mucuna pruriens - including this: "Itching powder was created from
Mucuna pruriens in the early 19th century as a cure for lost feeling in the
epidermis. When a person would lose feeling on their skin in conditions such as paralysis, the powder (mixed with lard to form an ointment) was used as a local
stimulant believed to treat the condition".
However, I can personally testify to loft insulation in the form of rolls of fibreglass being a very real cause for itchiness. One of the agency fill-in jobs that I had was working in a stinking hot warehouse near Heathrow Airport, stacking artic trailer-loads of loft insulation fibreglass. The lorries would come from south Wales, with the maximum-length-and-height trailers stuffed to their roofs with the rolls contained in thin (sometimes torn) plastic wrapping. It was mid-summer, and the warehouse was just a great single-skin metal shed. Standing on scaffolding planks, we would stack the rolls to the roof of the shed, as if placing bales to make a haystack. And hay can be pretty itchy too. The sweat would run off us, and - yes - we would scratch our bare arms and legs (I was wearing shorts) from the itchiness the air-borne fibres produced. I was very relieved to be able to get home at the end of a day, and have a good shower to get rid of any fibres still clinging to my body. No one talked of using fibreglass to make itching powder. This was in the days when wearing
face masks was just not heard of. I've no idea what volume of the fibres we inhaled, but we worked a full eight hour day, unloading more than one trailer a day.
The job lasted only a few weeks, because I found long-term employment elsewhere. Maybe I was lucky. I now use an asthma inhaler - but I am 81 years old.