Removing old Wax, Layering New Wax?

[Mike Phillips]

Here's some information that I've already written on this subject...


12. Are multiple coats of wax beneficial? (Layering)

That depends on what effect you are looking for: protection or beauty.

Protection

If your looking for the maximum protection possible, then one or two thin coats of wax, maybe even up to three thin coats of wax, has the potential to create the most surface protection depending on the wax, the surface itself and whether or not sufficient time has passed in-between each application. Of course the law of diminishing returns states that you will not create exponentially greater layers of protection with each application, but Meguiar's knows that a second, and sometimes third application will insure uniform, thorough coverage over the majority of the surface, thus maximizing the protection.

Environmental conditions today demand more frequent washing and waxing in order to prevent costly damage to the outer layers of paint. Just as important as a second, and possibly a third coating of wax is to provide the maximum amount of protection in any one detailing session, (especially on the horizontal surfaces), it is also vitally important that you wax more often to maintain your finish. This is especially true if your car is a daily driver exposed to the elements and parked outdoors most of the time.

Beauty

Question? Will more coats of a product make a finish deeper, darker, and wetter looking with each additional application?

In a word: Possibly

Generally speaking, when trying to take your car's finish to its maximum potential for clarity, gloss, shine and depth of color, there comes a point, or a plateau, that you will reach whereupon additional applications of either polish or wax will not increase the results of any of those categories. Of course, you are more apt to reach this plateau if your skill level is high and if the quality of your products is also very high.

These assumptions also assume that the surface in question is on

• * A brand new car
  * A car with a brand new paint job
  * An older car whose finish has been well maintained and is in excellent condition
  * An older car whose finish has been professional restored to excellent condition

If any of the above holds true, then you will most certainly hit the wall, so to speak, reaching that plateau of perfection whereby further applications will not improve the results of the previously applied coating. Your finish will have reached its maximum potential in appearance value.

After time goes by and this plateau you have previously reached begins to diminish, you can restore the paint to it's maximum potential again, quickly and easily by simply applying a new coat of the right wax or polish. This maintenance procedure will only act to restore the finish back to it's maximum potential and shouldn't be positioned, or confused with making your surface deeper, darker, shinier, etc. than it's maximum potential.

Once you hit 100% max potential, (or that plateau), it's time to stand back and admire the results, not continue to apply more and more coats.

Special Note: Ideas suggesting that repeated applications of a product will continue to increase optic clarity and gloss and protection are misleading you and your own common sense should enable you to understand that a finish, whether black, red, single-stage, clear coat, etc. has a limit to how perfect it can become. 100% of 100 is 100

[Mike Phillips]

Copied and pasted from Meguiar's *NEW* FAQ ,

13. Can Meguiar's waxes be "Layered"?

Meguiar's waxes can be layered, but two things must be tended to when layering waxes. 1) You must use the right waxes ("Layerable" waxes), and 2) You must recognize that at some point, "The Law of Diminishing Returns" takes effect.


Layerable waxes

A Layerable wax, is a wax that the protective ingredients used in the formula (natural and synthetic), are such that the protective layer left behind will not only adhere to the paint, but in subsequent applications, will adhere to itself. It also means that the carrying agents, be they solvent, water or something else, cannot be strong enough or in high enough concentrations to re-liquefy the previously applied layer, thus removing it during your attempt to add another layer.

Layerable waxes are primarily pure waxes, or protectants (as synthetic formulas are referred to) that do not contain chemical cleaners, or solvents that will remove the previous layer.

There is an exception to this rule and that is that it is possible to first apply a cleaner wax, and then apply a pure wax or pure synthetic over it.


The Law of Diminishing Returns
(Thomas Malthus "Essay on the Principle of Population" published in 1798.)

While this theory is generally used to discuss topics as they relate to the areas of economics and politics, it is a model that can also be used to explain in this case, the complex action occurring at the microscopic level on the surface of your car's finish.

The law of diminishing returns as it relates to layering,

A surface, such as an automotive paint, can only hold so much product before all you're doing is removing all subsequent coatings applied to the surface.


That is to say, after the first, second and in some cases a third application/coating, any more product applied to the surface is merely removed when you wipe the excess off after waiting for the product to cure.

At this point you've reached a plateau (or limit), as to how much wax (natural or synthetic) a surface can hold. Once you reach this plateau, all further applications of wax simply become excess that will be removed (and thus wasted), during wipe-off because it has nowhere to attach and layer.

Of course, this all depends upon your definition of the word "Layer". If your definition of the word layer follows that of Webster's Dictionary:

2 a: One thickness, course, or fold, laid or lying over or under another.

Then yes, you can layer to a certain point. For example, you can add multiple layers of layerable waxes until the limit to how much a given surface of an automotive paint can hold before each additional application is simply removed, or replaces a previously applied layer.

You cannot layer to the point of developing a measurable film-build, and this is key; without negatively affecting, or diminishing to some degree, the shine, optical clarity, gloss, reflectivity, depth of color etc. of the finish

This is especially true if the product you're applying is not clear (in and of itself) to start with. If your definition of the word "layer" follows that of definition used by some on the Internet,

Layer 1: To continually build a greater level of protection with each additional application, or layer, of a wax or protectant. (Natural or synthetic)

Layer 2: To continually increase shine, optical clarity, gloss, reflectivity, depth of color without end and/or after a plateau, or point of maximum potential has been achieved.

Then no, you cannot layer a wax, synthetic, natural, or otherwise.

[CoryB]

Originally posted by Mike Phillips There is an exception to this rule and that is that it is possible to first apply a cleaner wax, and then apply a pure wax or pure synthetic over it.

Excellent writeup, as usual Mike.

One question though - specifically which Meguiars products are considered to be "layerable"?

[Mike Phillips]

Originally posted by CoryB
Excellent writeup, as usual Mike.

One question though - specifically which Meguiar's products are considered to be "layerable"?

With a loose definition of the point of diminishing returns, the cleaner/waxes are layerable in that generally speaking two thin coats will look better and leave behind more protection than one thin coat. If this is true, (and I believe it is), then a cleaner/wax is layerable at least to a second or third coat.

If you want to use a very stringent definition of the term the point of diminishing returns, then any of the pure waxes up to three layers.

M1611 Professional Paste Wax
M26 Hi Tech Yellow Wax
Deep Crystal Carnauba Wax


None of the above have any ingredients with the intended purpose of cleaning or abrading the finish.

That said, I think a person would be hard pressed to see a visual difference after the second coat assuming all conditions are perfect, however there may be an increase in added protection in that more wax could be left on the surface.

Wednesday, when we polished out the 1960 Corvette, we applied two thin layers of NXT Tech Wax. After removing the second coat, the finish had reached it's maximum potential, adding a third coat of wax would not have made a visual difference.
















As I previously wrote...


Question? Will more coats of a product make a finish deeper, darker, and wetter looking with each additional application?

In a word: Possibly

Generally speaking, when trying to take your car's finish to its maximum potential for clarity, gloss, shine and depth of color, there comes a point, or a plateau, that you will reach whereupon additional applications of either polish or wax will not increase the results of any of those categories. Of course, you are more apt to reach this plateau if your skill level is high and if the quality of your products is also very high.

These assumptions also assume that the surface in question is on

• * A brand new car
  * A car with a brand new paint job
  * An older car whose finish has been well maintained and is in excellent condition
  * An older car whose finish has been professional restored to excellent condition

If any of the above holds true, then you will most certainly hit the wall, so to speak, reaching that plateau of perfection whereby further applications will not improve the results of the previously applied coating. Your finish will have reached its maximum potential in appearance value.

After time goes by and this plateau you have previously reached begins to diminish, you can restore the paint to it's maximum potential again, quickly and easily by simply applying a new coat of the right wax or polish. This maintenance procedure will only act to restore the finish back to it's maximum potential and shouldn't be positioned, or confused with making your surface deeper, darker, shinier, etc. than it's maximum potential.

Once you hit 100% max potential, (or that plateau), it's time to stand back and admire the results, not continue to apply more and more coats.

Special Note: Ideas suggesting that repeated applications of a product will continue to increase optic clarity and gloss and protection are misleading you and your own common sense should enable you to understand that a finish, whether black, red, single-stage, clear coat, etc. has a limit to how perfect it can become. 100% of 100 is 100

I would challenge anyone to demonstrate a visual improvement on black paint, (either single stage or clear coated), with a fourth application of any product.