Congestion is a blockage of the nasal passageways casued by irritated and inflamed blood vessels in the sinuses. The irritation may be caused by a cold, flu or sinus infection or maybe even from an allergic reaction but if congestion persists you should consult a doctor.
Herbal treatment of congestion usually involves one of the many herbs that can act as a decongestant, breaking down the mucus build up and relaxing the passageways to make breathing more easily. Menthol vapors, from Peppermint or Spearmint, have been useful as a decongestant for centuries and are used in a variety of rubs and treatments for congestion. A steam bath inhalation of either Eucalyptol or the strong scent of Rosemary oil can both loosen mucus and make breathing easier, relieving a blocked nose.