Touch up paint pen

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CX 5 GT AWD
I have a 2016 black Cx5. I just purchased the Mazda genuine touch up paint pen to cover all the chips. I also have issues with the horrible paint chipping easily. My question is regarding the touch up process. Do I need to purchase a separate clear coat to cover the newly filled in chips?
 
You also might want to consider Dr. Colorchip. Quite a few people on this forum have had better results with this than the OEM pens.
 
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