It's a cool new product! But the micro pencil is what you want for a "Defined" Brow! The chalk gives a nice full Brow but there's definitely no definition. Some people don't like it Bc they say it applies to much powder and looks heavy. I think if you take your time and tap the excess it won't look as heavy. I, myself much prefer a structured Brow and the micro pencil does just that! You would more than likely enjoy that much more!!
Hope this helps!!!!