You’ll find that if you use Blinc’s Lash Primer (you’re doing 2 steps anyway if you’re using the Double Extend), you’ll have far less clumping because the primer will seperate and coat your lashes before applying the mascara. More importantly, it does so without those white fibers that can get in your eyes and irritate contact lense wearers.

The biggest difference (other than the drying of my eyelashes) I noticed between the two was the ease of removal. Although neither flaked or smudged, the Blinc comes off easily with a wet washcloth, I really had to work to get the L’Oreal off. I don’t know if it’s the tubes or the primer; I’m guessing it’s the primer. I should try using Blinc’s Lash Primer with L’Oreal’s mascara to see (which is not a practical solution unless you happen to have both lying around since you’re forced to get the L’Oreal primer with the mascara).

I did a comparison post here with pics showing my lashes with each primer, and with the mascara on. You can especially see the difference in the primers.