A primer is the most essential part of makeup for Indian tropical climate since I live in Mumbai ,the sunlight is always strong here . So to avoid my makeup from melting like a chocolate icecream I use this primer .I am not a big fan of silicon based primers which give a waxy feel to my combination skin type. The laura mercier primer is a hydrating primer . It moisturizes my skin and fills up my pores at the same time. The best thing is the liquidy consistency that makes it seep in the skin instantly and makes makeup look flawless. When using this primer you must know that a little goes a long way . A pea size amount is enough for your entire face .