What I do is take about 3-4 eggs that are "done" remove the contents, melt them down and produce a brand new egg. If you feel like you don't have enough product for a full egg just add shea or cocoanut oil to the mix and voila! (**If you use coconut oil do not leave your egg in hot areas because it will melt!)
Here's a video on how to get the shape of the EOS egg. In the video she's making a tinted balm, so feel free to experiment!
3-4 eggs (save one empty one to remake your EOS)
Small screwdriver (I used glasses screwdriver)
microwave safe bowl