Melt the butter and beeswax in a double boiler or a heat-safe bowl over a saucepan of water. Once all the ingredients are melted, remove them from the heat and let them cool for a few minutes.
Now, add in the essential oils and stir. I counted 15 drops of Rose Absolute, which was perfect for me. You may add more or less. Just smell as you go! Other scents for lotion bars are peppermint, geranium, lavender, or your favorite essential oil.
Allow the mixture to cool completely, then pop the bars out of the molds.
Store in an airtight container for up to one year.