Napoleon was my first proper foundation I bought, so I invested in the primer too. I have been using it for years, and I keep coming back to it. It is so hydrating, and a little bit goes a long way (so the bottle lasts forever!)
My make up lasts the whole day, but I haven't tried wearing my foundation without the primer. It just seems odd! I love that it acts like a 'barrier' between my skin and gives my foundation a smooth finish.
Lovely light scent, gorgeous packaging, it's worth the investment!
Great everyday primer, very hydrating on my dry skin. Helps foundation last and makes it look amazing. Only down side is the price however it does last a long time as you only need a small amount.