system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do liquids like beet juice stain so effectively?
gpt
The bonds of the compound that give beet juice (and other things that stain) their deep color are oriented in a way that make them very strong. These compounds (called chromophores) absorb visible light so you see them as colored. 

It is quite difficult to break these bonds using just soap or water. However, something like bleach (an oxidizing or reducing agent) can break or reorient these bonds so that the chromophore loses its ability to absorb light, and becomes invisible to you.