What is the ruling on a veiled woman applying cosmetic makeup to her face, and is this considered a form of wanton display (tabarruj) and an insult to Islam?

Makeup is an adornment that a woman is permitted to wear in her home or when she is concealed upon going out. However, it is not permissible for her to wear it and go out in front of non-mahram men, because it is a form of tabarruj (display of adornment), and this is an act of disobedience, not an insult to Islam.