Little World Organics does not accept formula returns. Our products come directly from the manufacturers in Europe, which means we are in control of their handling and storage every step of the way before the formula reaches our customers. If we accept returns of unopened formula, we can no longer guarantee the same quality, and the formula would have to be discarded. If your baby does not like a formula that you bought, you can gift it to a friend or donate it. There are also many online communities where you can resell European formula.