Business Insider
The new feature allowed a "live" filter to appear over the user's face, adding another dimension to selfies.
The update to Snapchat was unveiled last week, making the disappearance rather abrupt. According to IGN, Snapchat is operating a rolling update system that replaces older filters - in this case the rainbow filter - with newer ones.
New filters have been added including a screen smash filter and and an updated "love heart eyes" effect but it's still unclear why the rainbow puke filter has disappeared.
Business Insider has reached out to ask where the filters have gone and when we will see new ones.