I don’t have anything to compare Givenchy Mister Lash Booster Transparent ($30) to because I’ve never used an eyelash primer before. Given how much better I look when I take the time to apply face primer and eye shadow primer however, I figured it was worth a try. Plus, anything that might curb eyelash loss is always worth giving a whirl in my book. The brush applicator with its soft spikes is super cool (little surprise…Givenchy is after-all the brand that introduced spherical mascara wands!). It easily massages the transparent serum down to the base of my lashes, while the serum makes the subsequent mascara application a lot smoother (again think how much easier eye shadow glides on when you use primer first). It also improves hold and helps lashes appear fuller. While it helped them appear thicker, I don’t think this actually made my lashes stronger, but I’ve only used it three times so far (this just came-out), so that might change. In the meantime the wand has convinced me that indeed every part of our face needs to be primed for the most effective makeup application!