I use this every evening. It lasts quite a long time as you only need a few drops for your face. Does not feel harsh on the skin or irritating in any way. I think some fine lines are looking better after using this though obviously not completely gone which I wouldn't expect. I m... Read more

I use this every evening. It lasts quite a long time as you only need a few drops for your face. Does not feel harsh on the skin or irritating in any way. I think some fine lines are looking better after using this though obviously not completely gone which I wouldn't expect. I may buy the higher concentration next time but will definitely keep an Ordinary Retinoid product in my regime. Great for the price. Show less