Rinse the perfume bottle with hot water twice.
Once you’ve rinsed with water, wash out your perfume bottle with warm, white vinegar.
Heat 120ml of white vinegar in the microwave at 20-second intervals until it is warm (not hot!) Pour the warm vinegar into your perfume bottle until it is ¾ full, then plug the opening of the bottle with your finger and shake for 30 seconds.
Then, leave your bottle on the side for an hour with the white vinegar still in the bottle, so as much of the perfume scent is removed as possible.
After the hour is up, pour it down the sink, then rinse the sink down with water.