Is it forbidden for a woman to apply henna and to love her brothers?

Henna is permissible for women; indeed, it is desirable. A husband should not prevent his wife from using it without a valid excuse. However, if the husband insists on prohibiting it, his obedience becomes obligatory. Love for non-mahram men is a means of corruption, and for a married woman, it is an even greater sin. A husband's jealousy is commendable, but excessive jealousy is blameworthy. Do not burden all observant men with the transgressions of your husband.