Is the money earned by a woman and her children from her husband's work as a hairdresser for women considered unlawful money?

A man working as a hairdresser for women is forbidden, and the money he earns from this work is illicit, because earning through forbidden benefits is not permissible. This applies to money obtained from any work forbidden by Islamic law. As for the wife and children benefiting from this illicit money, if they are unable to acquire lawful money, they may take from it what suffices them, while disapproving of it in their hearts or with their tongues. It becomes forbidden for them to eat from it once they are able to earn and become self-sufficient. However, if they are able to rely on themselves and dispense with the father's unlawful money, then it is not permissible for them to eat from it.