I've been using one by Benefit which is a wax and a powder but I find it's too natural looking for me and last week I bought an eyebrow pen by Mac but it was so awful. I'm looking for an eyebrow pen that isnt very natural looking as my eyebrows are thin. Something that really defines them and makes them stand out. If anyone knows a good pen please let me know. Thank you.

A pen or a pencil? I have never seen an eyebrow pen. I used to use a pencil but I like the more natural shadow look on my brows, I use the "Sephora" brand brow powder and to keep them in place clear brow mascara. Have you tried "LORAC" ?? If you have a "SEPHORA" near you, you can try just about any kind of brow pencil there is and get help from an employee, they are very sweet and a BIG help.