Name: Nasal Spray Cleaner Material: Plastic Color: Blue Two Tips: Single opening tip for adults / Four-hole tip for children Bottle Capacity: 300/500 ml Used for nasal rinsing, suitable for professional dust inhalation, such as daily nasal rinsing and health care. Features: 1. This product is suitable for regular nasal rinsing or daily nasal care for individuals who inhale large amounts of dust due to occupational reasons. 2. The product is easy to use and portable, making it an ideal choice for personal daily care. 3. For your nose to perform yoga and prevent allergic rhinitis. How to Use: 1. If using the YT-300 (300 ml) model, pour one packet of 2.7g nasal rinsing salt into the water bottle, then add warm water up to the 300 ml mark. 2. If using the YT-500 (500 ml) model, pour one packet of 4.5g nasal rinsing salt into the water bottle, then add warm water up to the 500 ml mark. Ensure the water temperature is around 37 degrees Celsius. It should feel lukewarm when touched by your fingertips. Mix the nasal rinsing salt thoroughly until completely dissolved, then tighten the cap. 3. Select the correct tip: Ensure you choose the child's nasal rinsing tip for children. Children cannot use the adult tip. 4. Correct Posture: Lean your upper body forward, look down, and tilt your head slightly to the side. Hold the bottle upside down and gently insert the tip into one nostril. Relax, open your mouth slightly, and breathe (through your mouth) – DO NOT breathe through your nose. Press the valve button at the bottom of the water bottle (Figure 1), and the solution will flow automatically. DO NOT SQUEEZE the water bottle. The rinsing solution will enter the nostril, bathe the nose and sinuses, and exit through the other nostril. Once you finish rinsing one nostril, release the button to stop the solution. Rotate to rinse both nostrils. Package Contents: 1 pc Nasal Spray Cleaner