If I compare my spends to what the boy does...
Hair cuts - about £70 per year more than him
Hair dye - about £40 per year
Conditioner - about £60 year (blimey! - that adds up, and I don't use really expensive stuff...)
Sanitary towels etc - £70 year
Deodorant - £0 I get a particular brand brought back as presents from America by family etc. - Monkeygrinde buys his own, so actually I spend less than him on that - woot!
Makeup - £100 per year (just under a tenner a month - 1 mascara or eyeliner or a couple of cheap bits.)
Makeup wipes - £20 per year
Moisturisers etc - £0. I get given lots of body lotion, for some reason - and I tend not to use much, and I only moisturise my face sporadically.
Cleanser etc - £20 per year
Other bits (face masks) - £15 per year
Clothes / Shoes - I reckon maybe £200 more than the boy a year.
Bras - £75 year
Total = £670 p/a, or just over £55 a month - I could spend less on clothes, though (for that matter, so could he).