I’ve only been using this product for two weeks. I have other products in this line that I love which I use in the evening, so adding the DNA vitamin C for daytime seemed like a natural fit into my routine. It’s very lightweight and easily spread onto my skin. It is great under makeup and so far seems to be creating a nice, refined look to my complexion. No irritation so far, which is great as my skin is quite sensitive. I’m enjoying this product and am looking forward to seeing more improvements in my skin.