I like this mini container which is nice to store and make own mixture. However, this is a plastic container, not a glass container. I thought it was a glass because it wasn't indicated in the description. So I don't know how long it will last with a mixture of oil as some of oils will melt the plastic. I hope they will sell a glass version of this container in the future...Response from NYR on 30.04.19 'Thank you for your feedback, we have now amended the description on our website to indicate that the bottle is plastic. We appreciate your suggestion and will feedback your thoughts about supplying a glass alternative.'