Take a transparent plastic bottle, make a hole close to the bottom, and fix a plastic cone over it with silicon, if no plastic cone put a fat straw in the hole and make the cone with silicone, it can't be worse.
Put 1% salt water, no additives in the sea salt. Now lean forward outdoors or over a sink and turn the head to one side. Close the cover almost, put the cone in your upper nostril. Let half the water get through. Can make mark on the bottle. And poor half the other way. Then blow out the water.
This is good to clean the nose, OK for colds, but better to learn when you don't have one, and there is always some dirt in the nose to clean out. Many nerves in the nose, clears the brain also, you will think better. After 15 - 20 min. Use daily and several times when ill. Good size is 1/2 liter.no 300ml.
Google on netilota.
Put 1% salt water, no additives in the sea salt. Now lean forward outdoors or over a sink and turn the head to one side. Close the cover almost, put the cone in your upper nostril. Let half the water get through. Can make mark on the bottle. And poor half the other way. Then blow out the water.
This is good to clean the nose, OK for colds, but better to learn when you don't have one, and there is always some dirt in the nose to clean out. Many nerves in the nose, clears the brain also, you will think better. After 15 - 20 min. Use daily and several times when ill. Good size is 1/2 liter.no 300ml.
Google on netilota.