The Water Walking Potion is a buff potion which grants the Water Walkingbuff when consumed. The buff allows players to walk on water, honey and lava. The player can sink in the liquid by pressing ▼ Down. This lasts for 5 minutes () / 10 (), but can be canceled at any time by right-clicking the icon (), by selecting the icon and canceling it in the equipment menu (), by double-tapping the buff icon (), or by canceling the buff from the buffs screen ().
Despite the description, players are also able to walk on lava without taking damage and without the need for the Obsidian Skin Potion. This makes it a viable alternative to Obsidian Skin Potions when traversing the Underworld, as the ingredients required are generally safer to obtain (though more time-consuming to gather in bulk). Players should still take care when dropping long distances onto lava, as they may find themselves partially submerged and take damage from the lava.