Pink Gel

Pink Gel is a rare crafting material dropped by Pinky used to craft bouncy items and Molotov Cocktail. Bouncy items act just like normal variants of them, but bounce more times, and more vigorously, before losing momentum. A single Pinky will always drop 25-50 Pink Gel.

Trivia

 * While bouncy items never come to rest and will continue to bounce for quite some time, they are not immune to gravity, and given time will lose height until their bouncing more resembles perpetual rolling. This is true of all bouncy throwables, but is only truly observable with Bouncy Glowsticks, as the others explode well before this effect can occur.
 * All slimes drop different colored gels (which spontaneously change color when stacked with other colors), but pink gel is the only gel to be an actual different item.
 * Pink gel was actually a suggestion by llmarinen, a user on the official Terraria forums. The original post can be found here.

History
Gel rose 분홍 젤