How Many Essential Oils Do You Really Need? Just ten. Yes, just ten. These top ten essential oils will help you to regain your health, clean your home, care for your pets and nurture a productive garden or blooming flower bed. This book covers the descriptions and methods of use for these top ten essential oils, their source, their properties, their uses, and their applications in a concise, comprehensive layout and size ideal for quick reference. Why not have a concise reference guide close to hand for easy access and application when needed? Who needs hundreds of essential oils when only 10 will do?