Curious About the Right Time to Apply Vitamin C Serum? A Dermatologist Offers Advice

This text offers detailed advice on incorporating vitamin C into a skincare routine, primarily focusing on its application in the morning for protection against environmental damage. Here’s a summary of the key points:

1. Morning Application:

   • Apply vitamin C in the morning after cleansing to protect skin and prevent damage.
   • It can still be beneficial if applied at night due to the lasting effects of UV damage.

2. Routine Steps:

   • After cleansing with a gentle face wash, use a vitamin C serum.
   • Follow with a moisturizer if needed, and always apply SPF (at least SPF 30).
   • Vitamin C can be worn under makeup.

3. Product Recommendations:

   • The text includes product suggestions like Cetaphil Daily Facial Cleanser and La Roche-Posay Anthelios Light Fluid Sunscreen.

4. Avoiding Combinations:

   • Be cautious about mixing vitamin C with other active ingredients like retinol, hydroxy acids, or benzoyl peroxide to avoid skin irritation.
   • If irritation occurs, use these actives less frequently and allow the skin to adjust.

5. Serum Selection:

   • Vitamin C comes in ascorbic acid or ester forms. Ascorbic acid is more potent but also more likely to irritate sensitive skin.
   • Look for ascorbic acid or l-ascorbic acid on labels for stronger antioxidant effects.
6. Sensitivity Considerations:
   • For sensitive skin, reduce the usage frequency until tolerance is built.
   • Preformulated products may safely combine vitamin C with gentle active ingredients like niacinamide or hyaluronic acid.

Choosing the right vitamin C product depends on your skin’s tolerance and the desired potency and stability of the formulation.