Does HUMIDITY STORM™ work on all cards?

Works on Pokémon, Yu-Gi-Oh!, Magic, One Piece and vintage WOTC cards. Not recommended for cards with severe structural damage like tears.

How long does it take to flatten a card?

30-120 minutes in humidity chamber + 24-48 hours of pressing with weights.

Complete guide to flattening warped Pokémon, Yu-Gi-Oh! and One Piece cards. HUMIDITY STORM™ and HYDROPUMP™ techniques.