Must-see how to deal with failures according to case!

When you think that you failed in application…

Regard as steps of Pika Pika Rain Ceramic Coating application are…

applying the solution with a sponge,


wiping it with a microfiber cloth.

This simplicity is one of our attractiveness.
However, sometimes you might failed in application.
Also there could be various reasons such as mistakes yourself or unavoidable events.

In this article, we would like to introduce how to deal with them by each cases!

Case no.1 : Applied to the glass or rubber parts!

In the first place, why Pika Pika Rain Ceramic Coating cannot be applied to thems?
Some of you might think that it seems OK as it can be applied to plastic.

We understand your question!
Now, we would like to explain about the reasons.

Regard as glass parts

Frankly, the main reason is not effective.

Pika Pika Rain Ceramic Coating changes to 100% glass after hardening.
Therefore, it means applying glass (coating) to glass (parts)…
Of course, it could protect the glass parts and repel the water, but you could not be impressed by the results as the car body.

Moreover, glass is clear and it is the difficult part to find foggy results.
Sometimes our customers want to apply it to the glass roof,
but we always answer that it’s OK, but please apply carefully more than the car body.
(Recovery when you failed is much more difficult than car body, too!)

Regard as rubber parts

First, the solution will be absorbed too much.
Also please make sure that there is a possibility to change the color.
Some carbon, metal and chromyl parts as well.
Frankly, it is a very rare case, but Pika Pika Rain Ceramic Coating is made for the clear layer,
so please test to unnoticeable parts first definitely when you wonder whether I can apply or not.

Rubber is a shrinking part, so there is a possibility to become worse as stop its shrinking by ceramic coating.

An Extra article: regard as a sticker and a decal

We also ask our customers to avoid applying Pika Pika Rain Ceramic Coating to a sticker or a decal.
Because the solution is “liquid” before it harden.
That is to say these get weaker to stick as they absorbed the liquid.

Therefore, if you want to use a sticker or decal,
please apply Pika Pika Rain Ceramic Coating and protect the paint surface first, and then enjoy your decoration!


However, failures are part of DIY coating.
We would like to explain how to deal with below.
Please make note that some cases are difficult to deal with, so you should better to use a masking tape before application if you want!

For glass parts

・Please wipe the solution with a microfiber cloth if just after the solution adhered.
・After full hardening and if you can find foggy results obviously, you should polish with a compound for windows.
※Windows are very easy to get damages. Please use only for glass compound definitely.

For rubber parts

・Please wipe the solution with a microfiber cloth immediately if just after the solution adhered.
・When the solution has already get stained, it’s difficult to recover.


We have already mentioned in the article of rubber parts application,
please test to unnoticeable areas firs when you apply Pika Pika Rain Ceramic Coating to a car which in a bad condition or full painted.

Of course, almost all you can apply it without failures,
but Pika Pika Rain Ceramic Coating follows the foundation, so it can last longer if the foundation is as much as good condition.

Case no.2 : Began raining suddenly!

Pika Pika Rain Ceramic Coating doesn’t allow to get after 12 hours application.
If you are parking your car outside, please pay attention to “rain”.
Especially, you should be carefully more.

What will happen if the car caught in the rain?

If you leave the rain on the Pika Pika Rain Ceramic Coating which is before full-hardening, it causes foggy results and dirt.
Otherwise, the coating will be removed by raining.

How to deal with

【Before Pika Pika Rain Ceramic Coating hardening】

When it rains during application, please move your car to the other place where has a roof.
After that please wipe the water with a microfiber cloth.

If you are not able to do it, please stop applying immediately.
Then wipe the water on the car body with a microfiber cloth softly.

Using a cover is also fine.
Please use it after you wipe the water as much as you can.
Also please be careful not to rub against the car body and take it off as soon as possible. There is possibility to make hardening time longer as it doesn’t allow air to pass through well.

【During Pika Pika Rain Ceramic Coating hardening】

Hardening will be finished in its own way after a few hours application even before 12 hours.
In this condition, hardly ceramic coating will not be removed even it rains.

However, the time of hardening depends on the circumstances or weather, so please wipe the water drops with a microfiber cloth after raining.

If it becomes white or foggy, the glass layer forms onto the car body, so you don’t have to be worried about it.

【After Pika Pika Rain Ceramic Coating hardening】

After 12 hours application, it’s OK even the car body gets wet.
Please deal with as below if you find dirt or foggy due to rain.

・Before hardening
Wipe the solution with a microfiber cloth.

・During hardening
Polish with a compound and remove the glass layer.
After washing partially, reapply the area with the left solution.

Case no.3 : The coating became foggy!

Sometimes we had inquires “There are foggy areas when I checked the car body after application!”

You might apply ceramic coating to make your car beautifully, but at once the coating gets foggy, it looks bad.
Moreover, it could not perform its water repellency and gloss completely.

Then, we would like to explain about the reason to prevent this problem

Why does the ceramic coating get foggy?

1. Wiping the solution are not enough.

You should better to apply in to against this problem.
If you apply after sunset or in a dark place such as a garage, you tend to overlook even you cannot apply completely.

2. Drying the solution

In summer, the solution dries so quickly.
Then you could not spread the solution well and it causes foggy results.

3. Preparation is not enough

If you apply ceramic coating to a dirty car, the thickness of glass layer changes sporadically and the areas tend to be foggy.
At once the dirt is covered with the glass layer, you just have to remove it by polishing.
Therefore, let’s do preparation carefully.

4. Getting wet within 12 hours application

If the ceramic coating gets wet during this period, it hardens unstably.
Please check the weather forecast and set the schedule well.

How to deal with

Next, we would like to explain how to deal with foggy results.

・Before hardening
This case is that you noticed soon after you applied the solution.
You can spread the solution and easily in this case.
It is the easiest to deal with in this step, so please check by many angles during application.

・During hardening
In this case, the solution doesn’t harden completely,
so please apply the additional solution to the area and wipe it.
It’s OK if all foggy areas disappear when you check.

In case of after 12 hours application, polish them and apply the foggy area again.
If you reapply without polishing, the foggy area will be covered the new glass layer.

Case no.4 : Others

When you applied the solution too much thinly

“I might use the solution too much…”
“Somewhere I didn’t apply…”

If you worried like above, we would like to recommend the second application!

The step is just applying after full-hardening same as the first time.
(※Keeping the bottle in a cool and dark place such as a refrigerator is highly recommended.)
(※At once you open the bottle, the solution has started hardening. Please check whether the solution becomes white or crystals and use it on your own responsibility.)

Preparation is important for ceramic coating

For a brand new car, you don’t have to need preparation especially – car wash and removing oil are enough.
However, if your car is dirty or has already applied other coating, you need preparation.

If scratches or water spots are serious

Please polish with a compound to remove them.
If the area is small, using Water Spots Remover is available.
Using a polisher is highly recommended for polishing the wide area.

If your car has already applied other car wax or coating

If the car wax or coating are not strong which can be remover by daily car wash,
you should apply Pika Pika Rain Ceramic Coating after the old glass layer removed completely.

If you apply Pika Pika Rain Ceramic Coating onto another car wax or coating, there is possibility to become non-durable, so we would like to use Oil Remover just in case.

If the car wax or coating are strong which cannot be removed by daily car wash, please removed it with a compound.


How was it?

If you have already failed in application, we’re happy to try like above, but you want to prevent against them previously, don’t you?

Finally, we would like to explain about the tips.

Check the weather forecast and set the application day

We understand that we’ve already mentioned it many times, but Pika Pika Rain Ceramic Coating doesn’t allow to get after 12 hours application.
Therefore, please choose the sunny days for application and the next day.
To postpone the application is one of good ways such as a rainy season.

Apply the solution thinly and evenly!

“Is the solution enough for a whole car such a small bottle?”

We usually get inquiries from customers above.
However, you don’t have to be worried about it.
Pika Pika Rain Ceramic Coating spreads very well, so many amount doesn’t.

We understand you tend to use the solution too much, but it is completely different.
Please make sure that applying and wiping thinly!
Also we have a movie how to apply, it could be better you watch it and check the steps of application in advance.

“My problem doesn’t come under above cases!”
“I don’ find solutions even I study much!”

If you have any questions, please feel free to ask us with an email!