Use a hidden item. Takes time, but no item are expended.
In-Game "Help" Description.
Stash (とっておき, Totteoki?, lit. Prized Possession) is a skillset used by the Alchemist dressphere in Final Fantasy X-2 that allows the user to use items without actually expending them from the inventory. Stash has a longer charge time than the Item command, but once a Stash ability has been learned, the party member can use items through it in an infinite supply.
List of abilities[]
| Name | AP | Description | Prerequisite | Image |
|---|---|---|---|---|
| Potion | 10 | Use a spare Potion that you tucked away. | None | 
|
| Hi-Potion | 40 | Use a spare Hi-Potion that you tucked away. | Potion | 
|
| Mega-Potion | 120 | Use a spare Mega Potion that you tucked away. | Hi-Potion | 
|
| X-Potion | 160 | Use a spare X-Potion that you tucked away. | Mega-Potion | 
|
| Remedy | 20 | Use a spare Remedy that you tucked away. | None | 
|
| Dispel Tonic | 20 | Use a spare Dispel Tonic that you tucked away. | Remedy | 
|
| Phoenix Down | 30 | Use a spare Phoenix Down that you tucked away. | None | 
|
| Mega Phoenix | 200 | 'Use a spare Mega Phoenix that you tucked away. | Phoenix Down | 
|
| Ether | 400 | Use a spare Ether that you tucked away. | Dispel Tonic | 
|
| Elixir | 999 | Use a spare Elixir that you tucked away. | Ether | 
|