Madison Malone Kircher
However, you get to keep them forever.
Photo Lenses superimpose a live video onto your face using the technology Snapchat acquired in its $150 million (£100 million) acquisition of Looksery.
Every day, Snapchat refreshes the available filters, but there has previously been no way to access the ones that disappeared. Until now.
Here's how to get the old/new lenses.