Curtain and blind are common breeding place for germs and bacteria, not to mention dirts. Therefore, clean them regularly. The best way to do it is to wash them regularly in the cool water with soft detergent. But make sure to check and follow the manufacturer's instruction.
If the curtain is not dirty, only a little bit dusty, you could use vacuum cleaner, then change the nozzle accordingly with the suitable size and the lowest setting.
You could also put the curtain into the dryer, then set the lowest heat to remove the dirts and straighten the creases.
To clean the curtain easily:
1. Use old socks on your hands.
2. Soak in soapy water.
3. Use your fingers and thumb to clean the upper part and the base of each sides of the curtain.
Alternatively, if your have bathtub:
1. Take out the curtain from the curtain pole.
2. Soak the curtain in the bathtub.
3. Scrub with clean cloth.
4. Then empty the bathtub from water.
5. Run the water to rinse the curtain.
6. Hang the curtain on the bathtub until dry.