Not sure about the (photo editing) app, though I've seen the same kind of thing on Amazon which includes the corresponding app.

https://www.amazon.com/gp/product/B071FWNQNV?th=1

Also isn't AliExpress similar to Rakuten, Ebay and Amazon where it's basically a huge marketplace of multiple different sellers (Which means your results with customer service, reliability, or potential to be scammed varies quite a bit if you just go shopping based on the site rather than the seller).

Editing wise I'm sure it's just basing off a mask.