I have only had this product for a short time so I cannot speak about its effectiveness, but I have been disappointed with the texture. It feels a bit grainy and it has a very greasy feel to it which never dries down. It also leaves a stinging/prickling sensation which is quite unpleasant, despite the fact that my skin should be accustomed to vitamin C, as I have been using another 20% vitamin C for years. Perhaps this will improve with regular use over the next few weeks.

This is more like a cream than a serum. I found it to be quite grainy when applied alone however it applied better mixed in with a moisturizer. I don't use it under make up, I use it more like a mask as I'm nervous to try it under makeup incase the grains come back. Can see a difference in my skin when used. Not as potent as I would like but can't complain based on the price I paid. Overall it works!

I havent found it to be as potent as I thought it would be - I dont feel the tingle, and it is greasy. I do think the active ingredients are contributing to my improved skin. but wear it at night - not day as it doesnt absorb quick enough for makeup etc

I recently purchased this serum to use in conjunction with the moisturiser from The Ordinary skincare range. I can honestly say I have noticed significant improvement within a few days of using this product, for example, firmness, hydration and overall skin brightness. Another reviewer mentioned a slight tingling when first applied, I noticed that too but it does subside very quickly. For first-time Vitamin C users, this serum might be a little strong, however, there is another Vitamin C serum available from this range that might be a better starting point to help the skin acclimatise to the 23% higher strength Vitamin C serum. A little does go a long way with this serum and there is a slightly powdery texture but should this bother users simply blend the serum with a moisturiser. Having tried a diverse range of Vitamin C serums over the past several years I will certainly be purchasing this one again.

This product tingles when first applied but soon subsides. I have noticed a difference in the brightness of my skin after just a few days use. Great product very good price