1 First, after the essential oil is used up, put a paper pad with good water absorption on the bottle mouth and turn the bottle upside down for about one day. The remaining oil in it will also flow down.

2. Wipe the inside of the bottle with tweezers, then stick oil-absorbing paper on it once, and then wipe it with toilet paper again, and basically wipe off everything on the surface.

3. Mix water with detergent, then pour it into the bottle, cover the bottle cap and shake it, then let it stand for about 15 minutes, pour it out, add it again, repeat it for three times, and rinse it with water.

4. Then clean the inner wall of the bottle with a paper towel, open the lid and put it in a window or ventilated place for ventilation. If it is urgent, you can blow it directly with a hair dryer, and don't blow it too hot.