Itâs an app where you can search for or scan barcodes of skincare products and it tells you the quality of the ingredients in them. Surprise surprise, most of the products we put on our face are complete shit. But for example, I just did an entire Olive Young skin care haul of products I had NEVER TRIED, and I had complete faith theyâd be good for me because I researched each product on YUKA and all products had a 92+ rating, categorized as âexcellentâ on the site. This is a good one for the skin care fiends :)