. . "Examples of the salt of hinokitiol to be used in the practice of the invention are inorganic salts including alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as magnesium salt and other metal salts such as copper salt and zinc salt, and organic salts including alkanolamine salts such as diethanolamine salt, 2-amino-2-ethyl-1,3-propanediol salt and triethan" . .