True Love Potion

"If you can bottle love, you can do anything."

- Rumplestiltskin Rumplestiltskin crafted the True Love Potion from a strand of hair from Snow White and a strand of hair from Prince Charming. By bottling True Love, he was able to bring its powerful magic to the new realm.

History
Rumplestiltskin obtained a hair each from Snow White and Prince Charming through deals. He took Snow's hair in return for crafting a potion of forgetfulness for her in 7:15 A.M. and later obtained hair from Charming's cloak in return for telling Charming where to find Snow in Heart of Darkness.

When Rumplestiltskin placed both hairs together in a potion bottle, they entwined and began to glow. He placed in on his shelf of potions, with a heart symbol underneath it.

Prior to giving the Evil Queen the Dark Curse, he placed a drop of the potion on the parchment for the Dark Curse and then placed the remaining potion in an ornate golden egg for safe-keeping. In yet another deal, he had Prince Charming hide the egg inside Maleficent while she was in her dragon form.

In A Land Without Magic, Mr. Gold tells Regina and Emma about the potion, revealing its location to Regina by reference to her "old friend." He also explains that, because True Love is the most powerful magic, it can cross any dimension, even into a land without magic.

Emma fights the dragon to obtain the true love potion. However, when she hands the golden egg up to Mr. Gold, he takes off with it. Regina and Emma don't pursue him, because they both get a call about Henry, which allows Mr. Gold to take the golden egg back to his shop and retrieve the true love potion.

Mr. Gold, along with Belle, heads to the Storybrooke Wishing Well, where he pours in the true love potion after explaining to Belle that the True Love potion together with the magic of the waters beneath the well can bring back what has been lost - magic. And with magic, comes power.

Rumplestiltskin's apparently innocuous obsession with the power of true love is a theme that runs throughout his appearances in Season 1. When he uses the true love potion to bring magic back to Storybrooke, his ulterior motive is finally reveals.

Trivia

 * The potion is initially shown as glowing with white-yellow light in Fairytale land, but has changed color to purple by the time it shows up again in Storybrooke.
 * Mr. Gold tells Emma that she is tied to the potion because her parents were part of making it.
 * Using the true love potion in the Storybrooke Wishing Well creates a purple fog.