A menstruating woman may dye herself
حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا حَجَّاجٌ، حَدَّثَنَا يَزِيدُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا أَيُّوبُ، عَنْ مُعَاذَةَ، . أَنَّ امْرَأَةً، سَأَلَتْ عَائِشَةَ قَالَتْ تَخْتَضِبُ الْحَائِضُ فَقَالَتْ قَدْ كُنَّا عِنْدَ النَّبِيِّ ـ صلى الله عليه وسلم ـ وَنَحْنُ نَخْتَضِبُ فَلَمْ يَكُنْ يَنْهَانَا عَنْهُ .
It was narrated from Mu'adh that: A woman asked 'Aishah: "Can a woman who is menstruating, dye her hands?" She said: "We were with the Prophet (ﷺ) and we used to dye our hands, and he did not tell us not to do that."