We are happy to take back any of our glass jars that are 7 ounce or larger and give you a $1 off discount for your next purchase! Some of our vessels are great to have refilled! Specifically our concrete vessels and tumbler jars. Please email me at flameworksapothecary@gmail.com to arrange for a refill. In both jar returns and refills, you do not need to clean out the vessel first! We are happy to do that for you.