J.V.
Nicole I have never heard about a nasel technique as far as to relieve headaches but I use it all the time for sinus congestion and allergies. you can go to walmart and get a nasel wash kit or what i do is use a baby suringe (the green one, the kind to suck their nose)and fill full of warm water, not cold or too hot. tip your head sidways, not back or it will go down your throat. then squirt in the nostril on the top side and it will run out the bottom nostril. It in not really comfortable. If feels like when you get water up you nose from a swimming pool. this technique rinses all the bacteria out of your nose that causes sinus infections and allergies. you may also use a mild saline solution. Google Dr. OZ on Oprah. she had him on there and he talked all about it and how it works or just google nasil wash. It works really well for me especially when I get sinus headaches. good luck