Now some companies want to use labels to help them pick everything from shampoo to milk, based on products’ carbon emissions. The growing use of so-called carbon labels comes as consumers ...

We broke down the ingredients on the back of the bottle. 1. Water ... Items like sodium citrate or citric acid on your shampoo label are added to keep shampoo at the right pH level.

To locate a period after opening label on your shampoo, look at the back of the bottle, toward the bottom. If your product has a recommended “use by” date, you’ll see a symbol that looks ...