Yes, any (non medicated) moisturizer that you are using on your body should be safe to use in small amounts on your lips — after all, if it's designed to be put all over your skin there shouldn't be anything toxic in it.
What can I put on my lips to moisturize them?
Apply a non-irritating lip balm (or lip moisturizer) several times a day and before bed. If your lips are very dry and cracked, try a thick ointment, such as white petroleum jelly. Ointment seals in water longer than waxes or oils. Slather on a non-irritating lip balm with SPF 30 or higher before going outdoors.