From Guild Wars 2 Wiki
— In-game description
- Coat yourself with your Mystic Chromatic Ooze and go into the lava at the heart of Mount Maelstrom. Walk into the lava northwest of Maelstrom's Waypoint, just north of where the two promontories jut out over the lava.
- This item does not enter your inventory. It is added directly to the collection.