Please take note that the result/durability is depends on how well the surface preparation you have done before you apply the Permanon and where you normally park your car. If you wash your car twice a week by using PH neutral shampoo, this package can last for at least 6 months as you only require 20ml Permanon to mix with 100ml distilled water for 1 application (exterior only) where 1 application can last for few months. 

Before you apply Permanon, you have to make sure the surface is free of wax, silicone, oil, fat etc so to achieve the best result.  Hence, if you send your car to do polishing/waxing, then you will have to use all purpose cleaner to remove the polish/wax before you apply Permanon.

Should be fine and please make sure the shampoo contains no wax or silicone. 

Optimum car wash and Brilliantshine shampoo both are car wash shampoo.  Most of my customers prefer Brilliantshine shampoo because it really enhances the shine after you washed your car.

FX3 
On certain colored vehicles where a glass coating might not be able to reflect a full depth/richness, Fusion X3 brings out the inner depth of the paintwork. Fusion X3 stain removing action also helps greatly in removing stubborn stains that a clay and shampoo cannot remove. It is also serves as minor scratch remover. Fusion X3 is applied to allow the stacking of Permanon. Permanon on its ownself does not stack, ie reapplication of Permanon on a fresh coat does not result in a 2nd layer because the Permanon particles do not bond to themselves once the concentration is maxed out. Having an in-between layer allows a 2nd layer of Permanon to be coated on, thereby allowing you to have 2 layers of Permanon for greater paintwork protection.

Full application guide will be provided in the package.