Actually calling a sealant's (Zaino) appearance a plasticity shine is actually an indirect compliment to the product. Though I do not agree with this description, automotive paints are a form of plastic. Therefore, Zaino and other sealants present the finsih in its natural state but with a durable protective coating.
Carnauba which I love also and have all the boutique brands produces a "different" appearance. One that can altered the optics and can enhance a sometimes not-so-deep appearing finish. Sometime this is due to prep, color and quality of painted finish. As mentioned previously certain colors (silvers, white) sometimes require this optical augmentation.
This is what Zane was pointing out. With a good prep which has the goal of maximizing the "natural" depth, wetness, reflectivity, and color hue will only be "protected" by a sealant not "altered" in appearance. When using either a carnauba or a sealant, the goal of my prep is to achieve the final appearance I am seeking and asking little from the protectant for visual augmentation.
Products used, skill, experience, and bravery (wet-sanding and rotary usage :scared) all come into play when seeking these natural appearance goals.
Most sealants do not contain "cosmetics" (oils, which feed the paint

) so all depth must be achieve via prep. Some finishes do not have great depth even when prepped to the max. Therefore, in order to give this appearance one should use a product that produces the appearance of depth (i.e. carnauba containing products or glazes).
What is the point of durability if you are driving something that does not meet your appearance needs? If Zaino / Klasse do not meet your appearance needs and long-term durability is not necessary, by all means do not use this type of protectant.
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On the other side of the equation, why sacrifice durability if one can meet their personal appearance goal with a quality sealant like Zaino or Klasse. One always has the option to top with a carnauba and still maintain a long term protectant underneath and alter the final appearance one may desire.
Asking for a step by step method to achieve this is not possible beyond the basic polishing protocol. To imply that a sealant user is not being geniune by stating he/she has achieved a deep appearing results is just not called for. To call someone out for detailed steps to prove how he/she got these results is again unnecessary.
I am a big/small block fan /owner. I have tried the micro-block scene but can not find driving pleasure out of buzzing around and shifting endlessly to stay in the power (oxymoron

) curve. Would I ever state that someone who does drives this genre of vehicle is not geniunely excited about the joy they derive from driving one? No.