One year ago, I didn't even know what a primer was =.=" such a noob hahaha. But I've learned some new things this year xD. Use a primer before applying eye shadow, it will last longer and it won't smudge. I've a combined skin type, so I really need to have a good primer before applying anything on my eyes. The last time that I went to Sephora I bought the Too Faced eye shadow primer, there are a lot of good reviews on the internet so I wanted to try it. There is not much inside, only 11g, but you will only use a little every day, so I think that you can use one tube for a half year or so, it depends if you use it every day. It costs 14 euros per tube.
I have only used it two times and its easy to apply. However, I only went outside for 6 hours and my eye shadow started to smudge a little, just a little. That is my experience with this product, but every person has a different skin type, so it will have a different effect on every person. This product should be perfect for people with a normal skin, which isn't oily at all.
Overall rate: ❤❤❤❤❤ 4/5