I am a follower of essential oils that I use to look after me but also increasingly in lieu of some of my cosmetics. The recipes in this book are very interesting, but quite impractical to implement. I would have appreciated assays in drops and not ml! it is indeed too complicated to accurately measure 1 or 2 ML essential oils. Moreover, since we use very little oil every day, a dosage drops significantly enough, even prepare recipe 2 or 3 times a week.