Arnica Flowers Whole, Arnica montana can be used externally in a muscle rub, cream or diluted tincture to speed the healing of wounds, bruises, sprains and swellings, and it increases resistance to infection. It is wonderful for calming children who may have fallen over, bumped their heads, or hurt themselves. Applied over any unbroken surface it will ease pain, relieve rheumatic joints and stiff muscles, and painful, swollen feet. Not to be taken internally or used on broken skin