« regard to dyeing the eyebrows or a part of them with a blonde colour or a colour similar to that of the skin, there is nothing wrong with this, as was stated in a fatwa issued by our Shaykh 'Abd al-'Azeez ibn 'Abd-Allaah ibn Baaz (may Allaah have mercy on him and raise his status). He also stated in a fatwa that it is permissible to remove hair growing between the eyebrows because this is not part of them, but he stated that it is not permissible to trim the eyebrows if they are not troublesome or causing harm.
And Allaah knows best »

« Dying the hair and eyelashes It is permissible to dye the hair and eyebrows any colour except black, with substances that do not cause harm, such as henna and the like. It is permissible to dye the eyelashes black. Is permanent dye of the eyelashes changing the creation of Allah? If this dye is permanent and will last, then it comes under the heading of changing the creation of Allah, may He be exalted, and in that case it is haram. »