Vitamin C ingredients have an oxidation process.

Vitamin C of VM serum contains a stabilized Sodium Ascorbyl Phosphate component among vitamin C components, so the oxidation process is slower than pure vitamin C. 

However, Sodium Ascorbyl Phosphatte is a stable ingredient, but it does not mean that oxidation is not at all.

We do not use other unnecessary ingredients to prevent oxidation, and the oxidation process is natural, so please use it with confidence.

Please note that the oxidation period may vary depending on light, heat, and temperature.