Enfleurage. It's an uncomplicated, but time intensive method of making flower infused perfume. This method uses lilacs, which I know my husband would love! So, I just have to try it. One change I would make is to use coconut oil instead of lard.
12 September DIYs
DIY Essential Oil Perfumes
The Natural Beauty Workshop: A Guide to Stocking Your Natural Beauty Pantry
ParaNoire's tutorial on how to make your own perfume from fresh flowers