This got me thinking though - how much actual protection does BSD give? I mean I know the water behaviour is very good, but that's not everything as we all know. What I'd like to find out is how well it protects the paint against UV, water spotting, etc. Or is it simply that it is purely designed to go over existing protection and offer a highly hydrophobic water behaviour? I did some research online to ensure that it won't affect the coating and most of the detailers whom i queried were positive on applying BSD on top of the ceramic coat. Purpose of using this product was purely to get the pop effect on white paint and i am satisfied with it. My estimate was roughly 1-2 months with 1:2 ratio so with 1:1 easily it should last for at least 2-2.5 months. I've also applied it on the glass of my car and let me advise you to not to do so. The wipers started juddering, whereas the rear wiper wasn't able to wipe the rear glass completely. Note that I've changed my wipers recently so that could also be the cause of the problems. As for the door's glass, it did quite well.

Also note above mentioned points have been penned down after using the product for 1-1.5 months. After applying the product, the car wasn't washed for the same duration. Only a Jopasu duster was used to remove the dirt. It also provides very good protection. The birds poop which would earlier leave a orange coloured spot on the paint (if i cleaned it after a day), was now unable to leave any spot even after sitting on the paint for three days. I would in fact go to an extent that BSD is the most economical way to keep topping the protection and gloss. Perhaps you can monitor the amount of time it will take with regular maintenance for BSD to ear off. If I may ask which brand of coating was it and did the detailer specify if its a 1 year or 2 year or 4 year coating?

SONAX

Since your car is coated with Ceramic, that too isn't very old, you won't notice any significant improvement with BSD or any other products. Wax could provide a little more depth because of the oils present in it, but BSD isn't going to do that. BSD as an standalone product, gives a very cold finish and not a warm finish like the wax. I also wasn't able to notice significant gloss on my paint with BSD but the water beading effect was surely there. If you want, you can try products with SiO2 content. Might show you better results than BSD. SONAX is the market leader in car care products in Germany, and one of the leading manufacturers worldwide. However, this is my first Sonax Product and it is so exciting. The BSD was updated or improved some years ago and placed under Xtreme Line. The predecessor bottle was opaque and gray in color.

So far I have applied BSD in ratios of 1:3,1:2 and lately 1:1 and I could not find any reason not to use it atop of the coating. That's when I thought of using BSD. I also experimented with BSD on half of the boot of my Altis which has not been detailed for years. I could hardly find any improvement in Hydrophobicity or Shine.Why did you go with this, because in my opinion The Turtle wax Ice seal and shine is way superior, and with the turtle wax brand launched just a few months ago, availability and price isn't an issue. In my constant endeavour to try different products this time I set my eyes on Sonax Brilliant Shine Detailer. To test the durability and longevity I will only do a rinseless wash for the next month or so UNLESS the vehicle gets solied during rains.

Obviously the product comes in a spray bottle of 750ml. Fortunately the spray head works nicely and doesn't drip. Product is very easily to apply with sufficient time to spread evenly on the surface. Doesn't leave much residue, if any can be wiped off easily. I have used around 50ml to apply a single coat on my pre-cleaned car. Previously it had Menzerna PPU and K2 Ultra Wax. Believe me, i was in the same boat as yours where the ceramic coating offered the protection but the gloss was missing in my case too.Gyeon Bathe+ car shampoo is a SiO2 based car shampoo and adds a layer of SIo2 during the wash which means additional protection and some shine.