Well, yes, squinting can cause eye bags under your eyes. Generally speaking, when you get squinting, it can make your eyes' muscle become stressed. And it is easy to weaken your eyes. And also, you know that eye bags can be caused by eye strain and stress. So when you have got eye strain because of squinting, it is also possible to have eye bags under eyes. So just keep having a relaxing time. And do some eye exercises to relieve the symptom. By the way, if you have squinting, it can also lead to some eye diseases such as dry eyes, dark circles.
Yes, it is possible for you to get the eye bags under the eyes from squinting because of the tight tension of the eye nerves. If you squint often, your eye nerves will be intense and your eye muscles will get intense too. The not good blood circulation around the eyes will easily cause the eye bags under eyes. If you should use the tea bag to let the eyes get release.