Repulsion Gel

Repulsion gel was originally sold by Aperture as a dietary pudding substitute, however it was pulled off the shelves for various reasons. Afterwards, Aperture took advantage of its bouncy properties and decided to use it in testing, along with Propulsion Gel and Conversion Gel

Overview
If a player standing on a puddle of Repulsion Gel jumps, the jump will be higher than usual. Also, if the player falls or jumps from a great height onto the gel, they will bounce off going very high up(The height that Chell falls from determines how high she bounces).

Appearances
Repulsion Gel only ever appears in Portal 2. The first time you see it is in the 21st century testing chambers, and it is also seen in The fourth Gel Pump Station, as well as the boss battle against Wheatley.