Look at the form of vitamin C. There are various forms of vitamin C, these are, ascorbyl palmitate tetrahexyldecyl ascorbate, L-ascorbic acid, and sodium ascorbyl phosphate, among more. Click Derma Essentia to read more about Vitamin C. You should make sure you pick vitamin C serum whose formulation, penetration and bioavailability are great. Even though a huge number of serums come with L-ascorbic acid, some skin experts recommend tetrahexyldecyl ascorbate owing to it being more active.
You should consider the price. Find out more about Vitamin C from here. A great formulation ascertains suitable bioavailability and stability; two imperative factors when manufacturing vitamin C serum. Serums with the correct formulation tend to be more expensive. However, price does not mean everything as some products of inferior quality cost more. Some of the most expensive serums may lack studies supporting their suitability and their formulation may be wanting. When choosing a vitamin C serum, ask for advice from dermatologists to avoid saving little and end up damaging your skin.
Ensure you put the package into account. For serums to be stable and more usable, they have to be in packages that are unclear and those that do not expose them to light. Learn more from https://www.britannica.com/science/vitamin-C.