The Best Vitamin C Serum will contain the least reactive form of the Vitamin C Compound. The reason why this is important is because a Vitamin C Serum is only effective until it oxidizes.
The Best Vitamin C Serum will contain the most stable form of the Vitamin C Compound. The reason why this is important is because a Vitamin C Serum is only effective until it oxidizes. Once the Vitamin C has oxidized, it will be ineffective on the skin. At worst, an oxidized serum can be harmful to the skin.
What is oxidation? Oxidation is the interaction between oxygen molecules and other substances. These interactions, also known as chemical reactions, change the chemistry of the molecules involved. When this happens, the molecules do not function they way they did before those reactions.
As an example, when the Vitamin C compound in a Serum oxidizes, it means it has undergone a reaction that caused it to lose an electron. This makes the C compound extremely unstable and reactive. It will no longer be able to play its crucial role in collagen synthesis. Intrinsic properties of the Vitamin C have been altered, and one can no longer expect the Vitamin C Serum to work as claimed.
What are the factors that determine whether the best Vitamin C Serum will oxidize? There are 2 main factors.
First, the type of Vitamin C compound being used to make the serum is a factor in how long the Serum will stay effective. Vitamin C comes in many different forms: ascorbic acid, sodium ascorbate, etc. Each form of C has its own bioavailability and factor of stableness. Ascorbic acid is famously highly reactive. This means it readily loses its electron when exposed to the air or water. When this happens, it qualifies as oxidation, and means the compound is no longer effective. The best Vitamin C Serum will contain Sodium Ascorbyl Phosphate. Sodium ascorbyl phosphate is a naturally occurring substance that resembles a white powder made of tiny crystals. Clinical research has determined that sodium ascorbyl phosphate retains many of the same properties as pure vitamin C, but the molecules of the substance are far more stable.
An additional integral factor that determines the bioavailability and potecy of your C Serum is the solvent being used. Water causes Vitamin C oxidation. Therefore, if the main ingredient in your Vitamin C Serum is water, you’re probably throwing money down the drain. Instead, check for a serum that is immersed in botanical Hyaluronic Acid and/or Organic Aloe. These will help the C compound resist its oxidation longer, and will also help with the compound’s penetration to the layers of your skin where it can do the most good.