Endosulfan is a mometasone furoate nasal spray, and the correct way to spray the nose is to start the drug by shaking the bottle well and then clean the nasal cavity before spraying the nose on each side. In the first step, for the first time or if it has not been used for more than 14 days, it is necessary to start the medication, shake the bottle well and spray it into the air 2 times to observe an even spray before nasal spraying. Step 2, clean the nasal passages by blowing the nose or washing the nose with saline. In the third step, tilt your head slightly forward and spray the left nasal cavity with the medicine in your right hand and the right nasal cavity with the medicine in your left hand, once each, avoiding the septum area. In addition, you should not blow your nose or wash your nose with saline until at least 1 hour after spraying to avoid losing the medication. Mometasone Furoate Nasal Spray is indicated for the prevention and treatment of allergic rhinitis in children over 3 years of age and adults, with common adverse reactions including headache, nosebleed, pharyngitis, etc. It is contraindicated in people who are allergic to the ingredients of the drug. Follow the doctor’s instructions for medication, the correct use of mometasone furoate nasal spray can play a therapeutic effect.