It is permissible for a woman to put highlights on her hair and beautify herself for her husband.
Muhtaram / Muhtaramah
In the Name of Allāh, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāh wa-barakātuh.
The highlights should not resemble fashion in vogue or the way adopted by immoral women.
And Allah knows best
Darul Iftaa,Madrasah Inaa’miyyah