I was dying to try this when it first appeared on the site. I'm not one to use a primer before foundation, but I can definitely attest to the efficacy of this product. First off, it's a great moisturizer - appears slightly thick, but definitely lighter than one would think and applies beautifully and evenly. It's just perfect for the weather right now - a little hydrating and just the right amount of emollient to seal the hydration. More surprising than anything, it dries down to a semi-matte finish, but the glow remains and helps to grip my thinner, water-based foundations really really well!!! I think I've been applying less foundation now after using this product...