In L.A., most of us have some experience purchasing things by weight. Nuts and dried fruit at Sprouts. Last-minute meals from the hot bar at Whole Foods. Weed at the weed store. At a growing number of places around Los Angeles, there’s a new category of bulk products: personal care and home cleaning items such as hand soap, moisturizer, toothpaste tabs, shampoo, laundry pods and all-purpose cleaner. They’re called refill stations. Almost all of them are woman-owned small businesses. And they all want you to rethink what a trip to the store looks like. Here’s how it works: You bring your own containers from home. Glass or plastic are OK, as long as they’re clean. If you forget them, stores offer a few options for sale. Many also have a basket of donated jars from other customers that you can use. An employee will weigh your container and mark that number, known as the tare. Fill up with as much or as little of a product as you want, then bring it back to be …