Assuming you mean gunpowder residue on the skin, any thorough cleaning, such as scrubbing with soap and water, or alcohol cleaner, would do. But there will also be burnt gunpowder burnt into the skin, and these are much less likely to be easily removed. (Powder burns.)
The skin care products we use are absorbed by the skin. Rubbing an oil blotting paper over your skin will not remove the sunblock.
Ancient Romans did not use gunpowder. Gunpowder was invented by China around the middle ages.
Neither a north or south end of a magnet can be used to remove skin tags. There are special creams made to rub on a skin tag to remove it completely.
They used gunpowder for fireworks and weapons.
Use a alchohol like nail polsh remover or rubbing alcohol but if you shot someone turn yourself in!
Who?
You can use any hand sanitizer to remove pernament marker off your skin,plastic,metal, and anything.
Gunpowder was invented by the Ancient Chinese. Gunpowder came to Europe in the 1260s.
To remove glass from skin, first but pressure on the skin near the shards. Then use tweezers to take the glass shards out, and clean the open wounds.
Take a shower and use lotion.
There is no specific collective noun for gunpowder, in which case, you use an appropriate noun suited to the situation a pound of gunpowder, a flask of gunpowder, a box of gunpowder, etc.