I am a firm believer in a good base making a perfect face, and this New CID i-prime Primer is amazing. It goes on smoothly to create a soft, even base for make up application. Apply to a cleansed, moisturized face. Less is more, so start with a little bit and build up, too much primer will make your make your face slimy and instead of holding make up in place, it will cause make up to slip off. Available for £25 from feelunique.com.