This serum is wonderful; It contains niacinamide which is a key ingredient and grape seed oil.
The serum comes in a matte glass bottle containing 30ml/1oz of product.
The consistency is milky/gel-like and is easily absorbed and in the few days that I have been using it it is leaving my skin soft and hydrated.
Another thing I like is the texture, it doesn't feel sticky and it's quite hydrating but the best thing is that it doesn't leave my skin greasy.
I think that layers can be added after applying this serum so that other products go on top.
My skin is smooth, clear and shiny and at 40 years old I am very happy to have tried this product.
It's a little expensive but if it's within your means, buy it, I recommend it!