I frequently use a saline nasal spray, especially in the winter when the dry indoor heat dries out my nasal passages.
Though this type of nasal spray doesn't contain oxymetazoline hydrochloride, I think that it helps you breathe better because it moisturizes the inside of your nose. By doing this, it also helps reduce irritations and swelling of the nasal passages, which in turn allows more air to flow through them.
A saline nasal spray is a safe and effective way to breathe easier without the risk of becoming addicted to this product. And even if you do feel like you can't live without it, that's o.k. because it doesn't contain drugs that can be harmful if it is used excessively.