The puff is a smooth and sanitary high-density, high-tech puff that would not smell or spread bacteria easily. The puff is used for Heynature Vibration Puff Device only and can be replaced or washed easily. To wash, completely separate the puff from the device and use a cleanser or neutral detergent to wash.Dry completely in the shadow before use. How to use: Apply BB cream (or foundation) on the puff. Turn on the vibration puff. Apply on the face and cover the portion you wanted. Re-apply on areas that need extra coverage Turn off the switch after using, keep in the case.