This serum did not work for my rosacea and I'm not sure why. It is a nice product. I may try another formulation in the Jurlique line as they have good ingredients.
For flushing and red skin, it may work for you. This serum is serious, it's thicker than most, and comes in a dense glass bottle. As you smooth over face with fingers, it creates almost a light "film" and this protects the skin from irritation like wind, air conditioning or heat.
The idea is to tamp down redness and then keep skin soothed with this coating effect. It's not sticky but you know there is something light on your face.