As you may already know L'Oreal Voluminous is one of my HG mascaras. I decided to try the L'Oreal Extra-Volume Collagen Mascara to see if it gave more volume to my lashes compared to Voluminous. Here are some comparisons and results (I feel like I'm back in one of my Psychology labs LOL)
The Collagen brush is supposedly 50% bigger than the Voluminous.
I curled my lashes prior to the two coats of mascara I applied per eye.
From a distance, they look basically the same
Conclusions: L'Oreal Extra-Volume Collagen Mascara made my eyelashes a little bit bigger and I believe darker (but they could just appear darker because they are bigger). Also, I like the brush more for the Voluminous Mascara better because I found it separated my lashes better, thus making it look like I had more lashes. As of this moment I still like my Voluminous mascara, but I think I will like Extra-Volume Collagen MORE when I continue using it for the next couple weeks. I've only been using it for a few days now and I'm always unhappy when I try a new mascara for the first time.