I've never been one to use an eyelash primer. I'm generally of the mindset that if my mascara cannot help me achieve the desired effect (namely, longer, more voluminous lashes), then I might need to look to a new one. Recently, however, while browsing Sephora with a friend, I decided that I would give a primer a go. I opted for Urban Decay's Eyelash Primer Potion ($20). As I am quite the UD devotee (their Eyeshadow Primer Potion is a fave!), I thought this would be a safe bet. I had also been hearing very good reviews about this product from others and I wanted to test it out to form my own opinion.
The product is meant to be applied prior to mascara (hence, primer). It applies to the lashes with a white hue, the formula of which is neither too liquidy nor too thick. The one thing I noticed almost immediately when I coated my lashes was the added length that it gave to them. It was amazing! I apply it as I do my mascara, lifting from the base of my lashes and extending outwards, and the results are fantastic. I do notice an increase in the volume of my lashes as well. The one thing I will say (and this might be the case with other - or all - primers as well), is that after applying the primer to my lashes (and letting the product set for a few seconds), I find that the mascara wand tends to stick a bit to my prepped lashes and it makes it a little bit more difficult to put on the mascara. This effect, however, is not enough to deter me from using this primer every day that I wear mascara, ever since I purchased this product a few weeks ago. The primer's wand isn't anything unusual; all of its bristles are of the same length.
I would recommend whole-heartedly checking out the Eyelash Primer Potion. I love the effect that it provides, fuller, longer-looking lashes even before the application of mascara. Urban Decay boasts a paraben-free, protein-rich formula that "conditions, fortifies, and thickens" with Silk Protein, Panthenol, and Hydrolyzed Wheat Protein.