How old is too old, for women?

At what age do women no longer find men attractive?

It would be helpful to have a better idea or a more realistic one to avoid embarrassment (of men trying too hard).

If you are a woman, or know one, can you get their age and their age preference in a partner? (Leaving aside obvious biases like great wealth or incredible looks or preservation...I'm thinking average men and women...)

thanks in advance.