How go make a shrinking potion that works?

Creating a fictional shrinking potion can be a fun exercise in creativity rather than actual science. You might imagine it involves combining ingredients like "fairy dust," "moonlight essence," and "a drop of dragon's breath" in a mystical cauldron, while chanting an incantation. Ensure to simmer the mixture under a full moon for maximum effect, and always include a safety disclaimer about the unpredictable nature of magic! Remember, this is purely imaginative and not meant for real-life application.