This is a phenomenal vitamin C product. It’s very light, smooth and easy to massage into your skin. It’s a watery type consistency that fully absorbs with in a couple minutes. It doesn’t give a greasy or oily look after application but it does give you a nice subtle glowing look to your natural skin. It has fantastic ingredients that all play well with my skin. I didn’t experience a purging phase after starting this product within the week. (I will update if that changes but I don’t expect it too). I also didn’t experience any redness or flushing when using this product. I was a little weary to see niacinamide mixed in a vit c product but the form of vit c this product uses does play friendly with niacinamide. (Usually only vitamin c derivatives can blend or mix with niacinamide) Which is why I expect I’m not experiencing a purging phase. I have been brand loyal to Sunday Riley ceo vitamin c for about 6 years now and I would actually be happy to rotate this product into my routine. I can’t speak to long term results yet as I’ve only been using this for about a week. So far I would highly recommend.