How to budget

My shampoo is so expensive I must spend 25 cents every time I wash my hair. And sometimes, more than I need comes out in my hand and then what? It’s not like I can put it back in the tube, so I use it, probably 35 cents worth. I don’t have that much hair. What a waste. But it’s the shampoo my hairdresser says I should use. She’s not just my hairdresser, she’s my friend, she’s been cutting my hair for 30 years and right from the start we were friends, she’s dear and generous and has had the same true heart all these years and I care for her and would trust her with my life. So naturally I trust her when she tells me what shampoo to use. I must admit too that sometimes I think my hair looks fuller now than it did a few years ago, falling out in clumps, before this shampoo was part of my daily toilet. I don’t really have to buy it more than once every three or four months but thinking about it I realize it’s so expensive I must spend 25 cents every time I wash my hair. Or if I’m going out that night I might wash it again in the late afternoon, and that would be 50 cents.  At least. If I’m careful and in control when I squeeze the bottle and not thinking about something else that may be annoying me. So we’re trying to budget, again, so I ask myself how can one budget that? Do I put some money aside each paycheck to cover myself for the day when the shampoo runs out? I don’t even do that for auto repairs, tires or oil filters and a bum radiator. But it should be in the budget somewhere, otherwise who am I fooling when, at certain times in the month when it's all expenses and no income and I look at myself in the mirror, with my hair frizzing off my head like a mad scientist, I wonder, what will happen to us all if we can’t pay the bills?