Dangerously poisonous substances are indicated in the recipe. However, one should never forget that all chemicals are relatively dangerous. After working with chemicals, you must therefore wash your hands in any case, and during work, you should not touch your eyes with your hands. When working with flammable liquids, there must be absolutely no fire in the room.
Larger wounds are then bandaged with an emergency bandage, smaller ones are treated with tincture of iodine (5 g of iodine, 1.5 g of potassium iodide and 93.5 g of 70% alcohol) and then bandaged with sterile gauze. One should never put cotton wool directly on a wound, first comes a piece of gauze, folded four times, then cotton wool and gauze on top. Small bandages are then fixed with adhesive plaster.
In case of insect stings, the stinger is carefully removed, the wound is sucked out and then rubbed with ammonia.
Wasp stings are sprinkled with vinegar or lemon juice. The pain is reduced by brushing with a menthol stick. Inflammation of the wound is prevented by wrapping with aluminum acetate (one tablespoon of the strong solution in a glass of water).