I received this product free In my I fkuenster voxbox and though I did receive this product for free it does not mean I have to lie in my review! I thought this product was to-do. I tried the monsieur big mascara that came in the voxbox as well both using the last booster first and without using it first. While I did see a difference in using the last booster it wasn\’t a dramatic difference. Honestly, in seeing the price of the booster I probably wouldn\’t buy it myself just because I didn\’t notice a huge difference. I would super highly recommend the monsieur big volume mascara by lancôme on its own, though. But, if you are looking for even the slightest if last length boost, totally go with this product. But if you want long, plush lashes without having to pay for 2 products, just get the mascara itself.