I bought KLASSE AIO and tried it just know but is it really safe for paint? Because
while I was putting it on S2k it felt like rubbing or polishing compound.

 

that's what it is meant for... car finishes. Its safe -- what are you applying it with? Thinner is better, remember that.

 

I mean if it is a compound it will slowly take off the paint. Which means it is not
safe for regular use.

 

Klass AIO is not an abrasive in any way. It is a chemical cleaner (like a silver polish) with a sealer/protectant.

It will remove oxidation OFF of paint, but will not remove the paint itself.

With the oxidation, it will also remove other waxes and sealants below it which is why it cannot be "layered". for additional protection you can use the Klasse sealant-only or you can add a good carnuba wax on top.

 

I`m glad to hear that. For this time I did AIO then Klasse sealant glaze and S100
on top of that. But since SG is hard to take off probably I will skip the SG next
time.

 

A couple of things I would suggest ... Go to Autopia.org and research the WOWO (Wipe on wipe off) method for applyig SG. AIO followed by S100 will not be as durable as the AIO, SG S100 combo

 

Perfectly safe !
It's not abrasive,it chemically removes oxidation.
Been using it for 3 years,I top it with a couple coats of P21S

 

It also seems to hold up well.