i dont use a primer as such but i do use Boots No7 High Lights Illuminating lotion under my make up, it's a pink liquid which is very slightly sparkly, makes your skin glow under your make up. It's about Ł10 i think. It's not too sparkly so you can use it every day, my make up looks so much better when i use it as it acts as a base. Good for tired grey winter skin !