Although the filter is taking off on TikTok, you'll need to use another app to get this effect - here is how:
Download and open the Photoleap app
Choose and upload the photo you to use for the effect
Go to ‘AI Edits’ and press ‘AI Selfie.’
A list should then appear at the bottom of the screen and select "Barbara."
The chosen photo will then be generated, save to camera roll.
To create the transition video to show the difference between the two snaps, search on TikTok "Barbie AI Filter" and tap on the first video in the search results and then press ‘CapCut – Try this template," which should then give you the template to use.