Oil of timelessness

Oil of timelessness, or unguent of timelessness, was a concoction employed to guard against deterioration and spoiling.

Description
The smooth oil itself was of dubious appearance, possibly even calling to mind poisonousness.

Powers
When labeled as oil, the substance was usually bottled in fractions enough to coat a horse or eight men. After, when it was more often labeled unguent, most containers held enough to coat eight men, four horses, or two elephants. If used on any substance that was only alive, the oil slowed down decay to the point that every year affected it as if only a day had passed. It also rendered the item somewhat more resistant to all forms of damage until removed.

It coated twice as much in the Demiplane of Time.

Notable Oils

 * Tessele Whitehorn carried some oil of timelessness on her person.
 * A chamber in Undermountain held some oil.
 * Oil of timelessness was a common Mulani magic item.

Trivia
The spell teleport through time called for oil of timelessness as one of its material components.