How to shuffle and deal playing cards
How to Clean Playing Cards
Cleaning plastic playing cards
Storage of playing cards
Store your cards in a consistently cool and dry environment. It is best to place a cut card and small weight on top of decks of stored playing cards, this will help prevent warping or bowing. Do not leave your playing cards in a hot car or exposed to direct sunlight.
Do not store Kem cards without placing a weight on top of the deck. Every single Kem card that I have ever owned has eventually bowed if I did not flatten the deck with a weight in between use. I love Kem cards, and they may still be the best playing card, but they will bow if you do not weigh them down.
No mater how good your deck of cards, they will eventually accumulate dirt, grime, and oils and begin to stick together. Some players say that sprinkling talcum powder on the cards will take away some of the stickiness. I say it leaves you with a deck of cards that will be shedding talcum powder all over your table and hands, no matter how good you clean them. It does however, help make the cards less sticky.