But the extra that women 'have' to spend vs men is negligible within the context of a £100 pw personal spending budget. If that's your argument it would need to be offset by the outdated expectation that men pay for dinner, drinks etc.
Plus if we're talking about things like 'a basic face cream, sanitary towels, tights, different styles of shoe etc' well men need more shaving equipment and might also buy moisturiser. Also if you have fewer pairs of shoes they wear out quicker so need replacing more often so the necessary cost is determined by how far you walk not how many pairs of shoes you have.
The amount you need to spend on these items is small anyway in the context of £100 pw personal spending. If you buy things that are more expensive than standard supermarket/Superdrug items, that's a choice rather than a necessity. Plus moisturiser lasts months. I probably buy 2 or 3 pots a year that cost about £5 a time.
Another poster has listed their spends and said she doesn't think its 'big spending' but to me the amounts look huge. I've put what I spend in brackets as a comparison.
^OK, my personal.spends per month are:
Hair £75 (£20)
Coffees £30 (£10)
Parking: £30 (£5)
Cosmetics/skincare: £40 (< £5)
Clothes/shoes/bags: £120 (averageish) (£50)
Drinks/dinner with the girls: £80 (£50)
Uber: £50 (£5 averageish)
Cards and the odd gift through the year £30 (£10)
Vitamins: £20 (< £5)
Magazine/book/£10 (£10)^
I have an Art Pass that costs about £7 pm and probably spend £50 on petrol to visit sculpture parks, museums, coast, countryside pm.
But in any case, it boils down to the amount being affordable, sensible prioritisation of your budget and equality within a relationship.
It's when your personal spending impacts the amount available for essentials like housing, bills, groceries, savings for annual and irregular expenses, emergency fund, pension or joint costs that, while aren't essential, are 'nice to haves' like holidays, family days out, Christmas presents, nicer food and decorations or your partner's personal spending money that it's a problem.