Skeletone Formula:D is an item in Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. It is used to heal the blorbs.
The Skeletone Formula:D first appeared in Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. It is the cure for the blorbs, created by the Best Fitness Friends. When the trio came to Bowser's Castle, they used the Skeletone Formula:D on a blorbed Goomba, turning him back to normal. Roy wanted all of their Skeletone to cure the blorbed goombas, but the Best Fitness Friends had only shown off a "trial" portion. They tell the Koopalings that the recipe for it is a Giga-carrot, an Omega-onion, and Ever Ice, and the seven accompany Bowser Jr. to find those ingredients, later finding out they would need help from someone to mix them properly. Once Bowser Jr. completes the formula, Kaley, a member of the Best Fitness Friends, swoops in and steals it, revealing that the Best Fitness Friends tricked Junior into making it. They turn the Skeletone Formula:D into Malatone Formula:X, an item that brainwashes some of Bowser's Minions and makes them hostile to their previous allies. When it was used on Morton, he attacked Bowser Jr. and Kamek. Junior and the Koopalings later take a bunch of Skeletone Formula:D from defeating the Best Fitness Friends and use the formula on the remaining Goombas, curing them. Junior also offered some to Bowser, who wanted some of it because he still felt bloated from the Vacuum Mushroom he ate earlier. However, Bowser eats too much of it, causing him to become Dry Bowser.