Both of these mascaras are tube mascaras- if you aren't familiar, here's what's up. Rather than conventional mascaras that paint color onto your lashes, these form little water resistant "tubes" around your lashes. They are sweat proof, tear proof, water proof, and rub proof. Your mascara should look as good when you get home from work as when you left in the morning. To remove them, you are supposed to be able to use just water, gentle pressure and a washcloth.
This product was in my first ever Birchbox. It comes in this little maroon tube with a screw cap, and when you open it there is the mascara. I feel that the package is excessive and lends itself to the high price tag of $25. This product certainly lives up to its expectations- it forms little tubes around the lashes, and I haven't noticed it budge an inch during the day. When I take it off, I find it a little more difficult than simply using water and a washcloth. I usually have to kind of grab and twirl my lashes to remove the tubes, and I use a few eyelashes in the process. I do find it hard to remove all the little tubes in a timely manner so I am stuck washing off my lashes for much longer than if I had just used makeup remover. The lash look is very basic and I don't find that it does much besides slightly lengthen and darken my lashes. It also leaves my lashes slightly crispy after application.
Both are decent formulas, but for how little I use them, I would only ever repurchase the L'Oreal because it's so much cheaper.
Yours in totally tubular mascara,