It's called toner, but the writing is serum. It's called serum, but it's super big serum haha. This is the first 300ml serum I have with Alaskan Glacier Water. Super Glacier! In addition, it has a key ingredient rich in hyaluronic acid. This serum is able to hydrate my dry skin well and rich serum texture helps to create radiant skin. Has a lightweight liquid water texture, easily absorbs into the skin, smooth and not stickiness. To produce maximum benefits, I recommend using a catton pad, gently wipe and applying briefly to the skin. It's so refreshing!