whatever you need really, but if you want to make it stretch go far a 2 shadows, lipstick, lipglass and blush, it should equal about 70 in total i think. If not then def go for the 187 its the bomb brush!!
i was looking through the 10 things i can't live without thread and the 187 brush and the fix+ came up in alot of answers so i'm going to get those and maybe a lippie. thanks ladies.