Vitamin C in Moisturisers: Finding the Correct Balance

Vitamin C is a staple ingredient in many moisturisers, yet confusion remains regarding the optimal concentration required for efficacy. The market offers a wide spectrum of percentages, ranging from subtle inclusions to potent formulations. Understanding what constitutes an appropriate level is essential for selecting a product that serves your specific daily needs without causing unnecessary irritation.

Higher concentrations do not inherently equate to better results for every user. Instead, the stability of the specific derivative used in the formula is often more indicative of how the product will perform on your skin. This guide clarifies how to identify the right amount for your routine.

1. Check the ingredient list. Locate the ingredient list on your packaging to identify the specific form of vitamin C used. Common derivatives like magnesium ascorbyl phosphate or ascorbyl glucoside are often found in concentrations between 1% and 5%. If pure l-ascorbic acid is present, look for a concentration between 5% and 10% for a standard daily moisturiser.
2. Apply to clean skin. Ensure your face is cleansed and gently patted dry before application. Apply a pea-sized amount of the moisturiser to your fingertips. Use upward strokes to distribute the product evenly across your face and neck.
3. Allow for absorption. Give the moisturiser at least one minute to settle into the skin before applying further products like sunscreen. This timeframe allows the ingredients to stabilise and begin their intended function. Avoid rubbing the skin aggressively during this period.
4. Store correctly. Seal the container tightly immediately after use. Vitamin C is sensitive to light and air, both of which can cause it to oxidise. Store your moisturiser in a cool, dark drawer to maintain its integrity over time.

Consistency in application is more effective than seeking the highest percentage of vitamin C.