Summer has a way of making money disappear faster than many people realize. Between vacations, social events, beauty purchases, and convenience spending, small expenses can quietly add up to hundreds of dollars over just a few months. What makes these costs especially tricky is that they rarely feel significant in the moment. A $12 iced coffee here, a last-minute online beauty order there, and an unused subscription renewal can seem harmless. Yet many financial experts say these hidden summer spending leaks can easily total $400 or more by the end of the season, leaving women wondering where their money went.