Is it permissible for a woman to remove excess eyebrow hair that causes her embarrassment and affects her appearance, knowing that bleaching is ineffective?

The basic rule concerning plucking eyebrow hair is that it is forbidden. Exceptions are made for what is necessitated by dire necessity or urgent need, such as medical treatment, or extreme density that disfigures one's appearance and harms the individual. In such cases, only the amount that removes the disfigurement should be taken. Anything less than that, which is not considered disfigurement, is not permissible to remove.