This new Product is spot on, it contains 2 forms of the most effective vitamin C, along with Feurlic Acid and Vitamin E. This is the magical trio that the World’s best but expensive Vitamin C serum contains. The Ascorbic Acid is not stable, so once you have opened it you need to refrigerate it, the dark glass bottle is important too as vitamin C is light sensitive. If you are just starting to use a C of this strength or have sensitive skin it’s best to apply a buffer first, an essence followed by a peptide or another light serum before applying. You will notice the serum is clear, if it changes to a brown shade it has become unstable and will loose its efficacy.
This is a very good affordable Serum, highly recommended!!