True and False Information About Vitamin C

Although Vitamin C is an indispensable component of modern skincare routines, there is a lot of misinformation about its effectiveness. Here are the scientific facts you need to know for a healthy skin barrier:

1. Relationship Between Concentration and Effectiveness
Contrary to popular belief, increasing the percentage of Vitamin C in a serum does not mean that the product's effectiveness will increase at the same rate. The real determinants in skincare are the correct formulation (pure Vitamin C or its derivatives), bioavailability, and the user's consistency in application. Uncontrolled high concentrations can cause skin irritation and acne breakouts. The ideal approach is to choose a stabilized formula that is compatible with the skin's tolerance.

2. Stabilization and Storage Conditions
Vitamin C, by its nature, is a sensitive molecule that can rapidly oxidize when exposed to light, heat, and air. To maintain the product's biological effectiveness, it is critical to store it in a cool, dark, and airtight environment. An oxidized product (one that has darkened in color) can lead to free radical damage rather than providing benefits to the skin.

3. Application Time: Why Use It in the Morning?
The perception that "Vitamin C should only be used at night" limits the potential of this powerful antioxidant. The most effective time to use Vitamin C is in the morning routine, before sunscreen. This combination enhances the effectiveness of sunscreen, protecting the skin like a shield against environmental factors and UV damage throughout the day. If different active ingredients (Retinol, AHA/BHA, etc.) are used in the evening routine, incorporating Vitamin C into the morning routine is the most appropriate approach for skin balance.