I`m over the other side of the pond and have used some Wowo`s products for maybe 4 years now, in particular Crystal Sealant as it is a cheap product that promises good durability. It isn`t a ceramic/Si02 product according to Wowo`s. Fraser of Wowo`s posted this thread a few years ago explaining the benefits of the product:
https://www.detailingworld.co.uk/forum/showthread.php?t=399016&highlight=crystal+sealant
In this thread Brian1612, who does a lot of reliable product testing, got 7.5 months out of it on wheels that were covering 300 miles a week (8500 miles roughly) and before he stripped it, they were still performing. I have had an easy 6 months out of it, before I got bored and tested something else. It can do 12 months on paint a daily driver in mild Welsh weather, washed gently. The performance profile over that time is different to something like Cancoat which has better hydrophobics straight off and it maintains the higher level throughout, predictably. Whilst CS starts at a lower level, my experience is that it holds on to a decent performance better than any other non coating product I have used and has good chemical resistance.
Tc99m has the right idea with application - thin, small sections, coating like. Immediately wipe straight off with a very slightly damp towel, and have a second towel ready to do a final buff. Like most sealants, it benefits from a cure which improves slickness and gloss. I find it has a bit of a shine like FK1000P, not sharp, but like thicker clearcoat. That`s why I responded to a post by Accumulator previously. It`s like a liquid, more durable FK1000P. It is versatile too, it can be used in a foam cannon, 50 ml in 450 ml of water and used as a rinse on spray sealant.