Ruling on cutting and dyeing the hair without the husband’s permission

Firstly: 

The wife is
obliged to obey her husband because he is in charge of her. Allah says
(interpretation of the meaning): “Men are the protectors and maintainers
of women” [an-Nisa
4:34]. 

Ibn Katheer
(may Allah have mercy on him) said: ‘Ali ibn Abi Talhah said, narrating from
Ibn ‘Abbas: “Men are the protectors and maintainers of women” means:
they are in charge of them, that is, the wife should obey the husband in
that in which Allah has commanded her to obey him; part of that obedience is
that she should treat his family kindly and look after his wealth. 

Something
similar was stated by Muqatil, as-Suddi and ad-Dahhak. End quote from
Tafseer Ibn Katheer, 2/293 

Two things are
excluded from the obligation of the wife to obey her husband: 

1.    

If
obeying him will result in falling into sin, either by failing to do
something obligatory or by doing something that is forbidden. In this case
it is not permissible for the wife to obey her husband, because the Prophet
(blessings and peace of Allah be upon him) said: “There is no obedience to
any created being if it involves disobedience towards Allah, may He be
glorified and exalted.” Narrated by al-Bukhari, 6830; Muslim, 1840

2.    

If
obeying the husband will result in harm to the wife or it will lead to loss
of her rights. In that case she is not obliged to obey her husband, because
the Prophet (blessings and peace of Allah be upon him) said: “Obedience is
only in that which is right and proper.” And he (blessings and peace of
Allah be upon him) said: “There should be neither harm nor reciprocating
harm.” 

For more
information, please see the answer to question no.
97125

Secondly: 

It is
permissible for a woman to cut and dye her hair, so long as that cut does
not resemble men or kafir women or immoral women, and the hair is not dyed
black. 

The ruling on
cutting and dyeing the hair for women has been discussed previously. Please
see the answer to question no.
139414 and 82671

If the husband
has not given his wife permission to cut or dye her hair, then it is not
permissible for her to do that. That is because she is enjoined to obey him
so long as he does not tell her to do anything sinful and because it is the
husband’s right that his wife should beautify herself for him. There is no
doubt that the hair is part of the woman’s beauty. 

And Allah knows best.