1. Gently take out the diffuser head. Turn the bottle counterclockwise and fill up bottle with fragrance of your choice.
2. Turn the bottle clockwise back unto diffuser head. Press down the diffuser head.
IMPORTANT: Avoid tilting the diffuser while the bottle is filled with liquid, as it may cause damage.
3. Long press circle button to switch on/off the machine. Click same button again to change the intensity level. Click on button next to the USB-C charging port to switch the lighting colour.