Is it permitted for a woman to dye her hair during the three weeks.
　
Horav Shloimo Miller’s Shlit”a opinion is that it is that although a woman is restricted on the use of cosmetics only during Tisha B’av itself, dying hair is different, since it is only done periodically. Therefore it is only permitted up to Roish Chodesh Av.

Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit”a.