Rosacea? How to calm it down?

What is the best serum, treatment, or mask to use for rosacea? I have rosacea (mild) and my face can get so red after doing a mask or treatment. It can be shocking to see. I would love to be able to use vitamin C or another type of product that will actually show me some improvement in the texture of my skin. Any advice? What do you use to calm redness/inflammation from rosacea or prevent it all together? Thanks so much in advance!!