Product Tips:- Set of 2 Mini Artificial Peony Flower Bunches Small (Pink) for Vase Pot Living Room Indoor Table Centerpiece Home Décor Wedding Decoration Party Events Gift,There would be accumulated dust if you put it in a place for very long time, You can use the hair dryer with cold wind to remove the dust *If it was seriously dirty,you could sink it into salt water with high concentration for 10 minutes and then add neutral detergent and then rinse twice. *Don't wash it by hands. We suggest that you don't need to wash it by hands and don't wash too frequently. It will fade if you wash it too frequently. *Please don't put it under strong sunshine.You'd better to dry it by the natural wind.