hey maybe a weird question. But syn waxes last for 6 months but during that time can u put a Carnuaba wax on top of it for extra protection??

A sealant (synthetic wax) has far more durability (will last longer) than a natural wax.

Using a wax as a last step product (LSP) on top of a sealant is usually done to 'improve' the 'look' (very subjective though)

2nd.

Yes, I use PS21 on top of NXT and it has a very deep gloss. Looks great on all my cars.

The synthetic waxes (aka sealants) will last up to six months, but most of them last less. There are only a few sealants I've used that can last up to six months and that is with good conditions and the proper prep work. Regardless yes you can layer a carnauba wax on top of it for extra protection and shine. It's a great way to get a deep shine and stronger protection than just a sealant.

Greg @ Detailed Image

cool thanks guys for the help

is it okay to keep putting sealant and then carnauba wax over existing sealant and carnauba wax? Or do you have to strip off the previously layers?

i would say if you are starting fresh strip everything off and go from there.

sealant first then carnauba. after that wax from then on. when you want to reseal it I would start fresh again.

Oh okay... and to remove sealant, i would get some Dove soap and wash the car.