Sinusitis is most effectively remedied with inhalation of anti-bacterial and anti-inflammatory essential oils which attack the bacteria as well as reduce inflammation in the sinus cavity.
The type of inhalation depends on the severity of the sinusitis.
Sinusitis is best remedied with a steam inhalation.
Mild sinusitis can be helped by using a personal inhaler.
Diffusing essential oils is not recommended as an effective method for relieving sinusitis.
In addition to the above, a lymph massage around the ears can help with drainage connected with sinusitis and can provide some relief. Click here and here for videos on YouTube showing how this can be done.
I've formulated recipes for you based on the best essential oils and the best methods of application.