There's no difference between acting as if you're the person on FaceApp and that you act as if you're actually Lara Croft and play Tomb Raider.
Simple fact is, it's fake. The makeup filter is not just makeup, it adjusts the angles of all of your features, like lifting your eyes and brows etc. Real makeup can change your features, but it can't physically alter your face like FaceApp does.
I also think it's really bad for dysphoria and self image.