A clean artificial flowers makes a bigger difference than you'd think. Here's the most effective method, plus the mistakes most people make.
Set a hair dryer to cool and blow dust off the artificial flowers from various angles.
Use a soft brush to remove stubborn dust from petals and leaves.
Place flowers in a plastic bag with 1/4 cup of salt. Shake gently for 30 seconds. The salt scrubs off dust without damaging delicate parts.
For larger leaves, wipe each one individually with a slightly damp cloth.
Let flowers air out for an hour before returning to display.