That's what I had to ask myself when I found out that they were included in our new product release, I had no earthly idea what they were, or why they were better. So off to the internet I went to find out more information. Found a great explaination at http://www.ehow.com/
What are Kabuki Brushes? Contributor By Tucker Cummings, eHow Contributing Writer
I want to do this! What's This? What Are Kabuki Brushes?
Kabuki brushes are a must-have accessory for anyone's makeup kit. Whether you are a pro makeup artist, a fashionista or just someone who likes to experiment with new techniques, adding a kabuki brush to your makeup kit is a great idea.
Identification A kabuki brush is a makeup brush with a short flat head and a short stem. The brush head is usually rounded or flat, with a curved edge.
Origin of the Name The name kabuki comes from a style of Japanese theatre defined by actors who wear heavy, stylized makeup.
Uses Kabuki brushes are most commonly used to apply dry, powder-based makeup such as foundation or blush. Because of its size and shape, a kabuki brush is excellent for applying a concentrated amount of product in a strong blunt curve. These brushes are also excellent for creating all-over coverage with a natural look.
Storage Kabuki brushes are very portable and easy to store, as they are quite small compared to other makeup brushes. Store in a cool dry place with low humidity.
Materials Traditionally, the brush head of a kabuki brush was made of soft, semi-rigid animal fur, most commonly goat hair. These days, they often are made of Taklon or another synthetic fiber. (Jordan Essentials uses a Thick Synthetic material)
Cleaning You can clean a kabuki brush by simply tapping it on the back of your hand to remove any leftover pigment. You can also cleanse it with a mild makeup cleaner, available at most pharmacies and beauty counters. Make sure to dry it throughly with a paper towel. Dab it dry, rather than wringing, to ensure the integrity of the brush.
Hope that you were able to find this as informative as I have.