When someone in r/AskWomen asked , “What’s your most-used life hack as a woman?” ladies answered the call — sharing everything from practical everyday tips to beauty advice to the kind of big-sister lessons you wish you learned sooner. Honestly, it's peak girlhood. Here's what people said: 1. "For those who use shaving gel that comes in aluminum cans: before you put it in the shower stall, use clear nail polish to make a thin coat all along the bottom rim of the can. Let it dry for a few minutes, then put it in the shower stall. This will prevent the can from rusting at the bottom and leaving those rust colored rings." 2. "Keep a backup purse or toiletries bag in your car dashboard filled with basics, e.g., deodorant, perfume, basic makeup, glasses cleaner (if you’re blind like me), mini toothbrush and toothpaste , mini brush , some cash, etc. It saved my butt on numerous occasions, such as impromptu meetings, having to stay over at a family member's house, dates you may need to rush to, etc." 3.…