Well i'm going to go against the grain here. YABU!! £70 on a hair cut at the best of times OMG!! I have my hair cut about once a year, the last time i did this it cost £40 it was birtday money. I nearly fell through the floor, ok she did a good job and i felt better in myself but when she said, would you like to book again for six weeks, i said, will it be cheaper because its not a restyle, she said No, i said, no thankyou!!
If your hubby felt he needed to highlight this as an non essential then i think that you should cut him some slack and compromise. Can you not stick some nice and easy on it to cover the greys? Could you just do what i do, go with what god gave you?
Ordinarily if a SAHM wants to spend money her hubby earns on stuff to boost self esteem, or to go bungee jumping if she so chooses then i would be in full support and jump straight on my feminist high horse if it was objected to, but if money is tight - no. Its about being grown up enough to think, this money could pay an essential bill or buy school shoes etc. If it is that important that you have your hair done, get a part time job to cover the bills.
My DD spent over £100 on her hair, i was gobsmacked, i couldnt believe it - yeah it looked amazing - black and green! But she earnt the money herself and left herself short the rest of the month to do it, next time she was at boots buing the dye it yourself stuff.
I am not big on my apprearance, clean is about all i go for these days, well always been like that really. My big spend would be on horses, i used to waste 100s on horse riding before DD and when i was working. I wouldnt dream of going horse riding (other than a once in a blue moon treat) at £20 an hour every week at the moment, we simply cannot afford it. We are not poor, but we are not rich either. I miss horse riding, i think it would be as good for my self esteem as would an expensive hair cut is for others, i could do with a boost, when we can afford it i will take it up again, but until then i'll stick to playing horsey with DD.