Summer lip products

The lip products I frequently use during hot summer days like these are matte formulas. I've been using various types of Etude's Fixing Tint lately, and my favorite is No. 7 Cookie On Top. It's a dried rose color with a hint of brick red, and I think it would suit cool undertones well. This product applies moisturizingly but dries to a matte finish after a short while, and it doesn't smudge easily even if you drink water, making it really great for summer makeup. I think Etude's Fixing Tint series is just perfect for summer makeup.