What's happening here is that we put your search query into a model that tries to figure out what skincare product characteristics (e.g. Vitamin C, Retinol, etc) would be good for you, but when it sees something that isn't a skincare product or a skincare concern, it gets confused and doesn't return anything.
This is something I ran into as well, mainly bc of your title and description. I tried it before reading your whole post, so I didn't know it's only skincare for now.
> Launch HN: Lumona (YC W24) – Product search based on Reddit and YouTube reviews
> Hey HN! We are Lumona (https://lumona.ai), a product search engine
https://www.lumona.ai/search/results?q=vegan+european+leathe...
^ That search does the forever loading boxes for me but if I add 'cream' to the end of it then it seems to work.