This rock-hard waterproof sealant?

[interestingbiscuit]

I've seen this advertised on Twitter and know it's too good to be true, or AI-generated, or some kind of scam anyway, so will not order it – but does anyone know of a geniune version of this – a thick, clear sealant that you paint on and is totally impervious? It's for a bit round a kitchen sink.... I did buy one from B&Q called Jaysuing Invisible Waterproof Agent, but it was crap, went white and flaked off in a couple of days.... 😩

https://twitter.com/Filzime/status/1733331449493832053

If you are going to paint over it why does it need to be clear?
You might need to prime before painting but you might be better looking at a place that the trades use.

https://www.screwfix.com/c/sealants-adhesives/weatherproof-sealants/cat850058

If it's going to be round the kitchen sink it needs to be suitable for contact with foodstuffs.

IME the best solution is oil which you reapply regularly.

I need a similar product. I'll advise if I find a suitable one.