Coloring Hair During Your Period
Q: I have a question: can I bleach or color my hair during my period?A: Certainly. There is nothing known of to prevent being able to color your hair during your period.
The only thing I've ever encountered regarding a woman on her menstrual cycle and getting a chemical service is that some women experience some sensitivity to odors during their menses. For these women, the smell of the chemicals involved can be nauseating during their periods. If you have such a sensitivity, simply avoid the chemical services during this time.
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See also:
Color your hair
How bleaching hair works
Birth control pills and changes in the hair
Dye or bleach your hair during pregnancy
Should you get a perm during your menstruating cycle?