Shiseido Accentuating Cream Eyeliner comes with the small synthetic brush you see above. The cover of the brush attaches to its bottom to form a handle, and the shape and density are perfect for the product. A couple of days after I got the eyeliner the kittens took off with the brush. Don't ask me how it happened or where they stashed it. I looked all over the place, but I suspect that somewhere in the house there's a secret stash of small items and single socks the cats are hiding from me. Since then I discovered that long and thin eyeliner brushes don't work well with this Shiseido cream liner (Louise Young LY24A and MAC 209 type). Instead, you need to go with a similar density to the original Shiseido brush and use stiff brushes- angled or ones like Hakuhodo K005.
Bottom Line: Love. Now I wish they'd make one in navy blue.
Shiseido- Accentuating Cream Eyeliner ($26) is available at the counters, Sephora (online only), and shiseido.com.