From Global Tint USA

There
are several reasons why your window tints start to form bubbles. If
your window tints are the ones of cheap quality, there is no wonder
that they might form bubbles after a few months after installation.
And if that cheap tint of yours is not installed correctly, then the
possibility of them bubbling is at a high rate.

Cheap
films and faulty installation might be evaded by being vigilant and
having a window tint provider that offers a better service, warranty,
and customer-client relationship. However, time will come, and your
tints will bubble because of its age. Bubbling is a significant sign
that you need to replace your old window tints.

Tint
bubbles can lead to much bigger problems if they are not solved
immediately. Bubbled films can cause tears if you try to roll the
window down. You might wonder why your tints start bubbling just
after a few hours after installation, and this situation should not
be worried about. It will help if you let the window tints dry.

But if ever there are tints after a few days and you want them to disappear, there is a DIY way of getting rid of the tiny bubbles. This Global Tint USA infographic will help you remove those bubbles.

SOURCE: https://www.globaltintusa.com/