Some of the most pronounced signs of aging include sagging skin, loss elasticity and skin discoloration. There are a number of ingredients and formulations that have been found useful in beautifying aging skin. Those include potent vitamin C as well as Niacinamide combined with N-acetyl glucosamine. Studies suggest (see below for a reference) that at a particular concentration as used in this serum, combination of vitamin B3 (Niciamide) and NAG (N-acetyl glucosamine) significantly used hyperpigmentation as compared to other methods. In addition, it contains skin plumping hyaluronic avid, skin loving vitamin complex as well as vegetable glycerine that works as a humectant brining hydration to your skin which hyluronic acid helps to retain l. 
This serum is definitely the next generation serum.
 Not only does it contains science supported amount of complexion Perfecting NAG and Niacinamide but also skin firming hyaluronic acid (high molecular weight) and vitamin complex (B3, B5, B6, C and E) 

Ingredients: distilled water, hyaluronic acid, Niacinamide, NAG, vegetables glycerine, vitamin complex, paraben free preservative.

You will receive a 0.6 oz glass bottle with dropper.
Please see a study below: 
https://www.ncbi.nlm.nih.gov/pubmed/19845667