Is hair allowance an act of allowing a woman to go and have her hair done? Definitely not. This is money that is provided to take care of anybody's need and this pocket money can be collected from a boyfriend, parents, husband or any other member of the family. Unlike the gold digger, allowance is earned in a way that someone has to be disciplined in a sense that after behaving accordingly, the allowance comes as a reward.
In the case of spouse relationships, allowance is normally provided as an act of love and willing to take care of the receiver's needs. A housewife who stays at home usually gets an allowance because since she never get a fixed salary, in order to take care of her personal needs she has to get an allowance from the husband.