Please, be careful on following things:

1. Do not use Jopasu Car Duster on wet surface
2. Do not wash Jopasu Car Duster unless it stop to pull dust
3. It works even it looks dirty
4. Its cottons are 100% wax coated

How to Wash and use Rejuvenator:

1. Remove handle and wash with good detergent
2. Dry it not direct light of sun
3. Spray with Rejuvenator and make sure all cottons waxed properly
4. Start using like new
5. You can use three times with one Rejuvenator (500ml)