Give each stem a good shake, allowing the pampas plumes to shed slightly, it may be best to do this outside as it can get a little messy!
Top Tip - for a fluffier, fuller look, you can use a hairdryer on a slow + low setting.
After styling your pampas grass in it's vase, you can lightly but generously mist your stems with hairspray, this will keep the plumes lifted for longer
To keep your stems fresh, it would be best to repeat these steps every 6 months.