Dry Face is one of the three skins released under the Rise of the Dead part of the Zombie Party offer. It was available for individual purchase using game coins in early August 2017.
Dry Face could be purchased in the Skins Shop under the 'Zombies' tab for 690 coins. It was available for a limited time and may not be available for purchase in the future.
Details of this offer can vary depending on location, platform or time.
Note: The Rise of the Dead sub-offer has been released many times after the initial 2017 debut. The price for Dry Face changed between 690 or 990 coins for each of these releases.