Chemicals such as methylene blue; arsine; phenylhydrazine; toluidine blue;
aniline eyes; camphor; napthalene (balls); henna; menthols
like alaxan gel; begesic, ben - gay, broncho rub white, efficascent oil; listerine (mouthwash, pocketpacks); mediplastin; megascent oil; mentopas medicated plaster; omega pain killer.