Stick foundations have become increasingly popular thanks to their convenience factor. They make travel a breeze not having to go into a liquids bag and they tend to be less messy. Milk Makeup Flex Foundation Stick is a buildable medium to full coverage foundation that comes in an impressive 36 shades. I haven’t tried many foundation sticks, and according to Byrdie, this is their pick for best foundation stick for oily skin. I was excited to play with this one and see how it works with my combo-oily skin.