Can you use Vitamin C with Niacinamide?
Yes. Vitamin C and niacinamide can be used together.
Why
The old 'they cancel out' warning came from decades-old lab work where pure niacin and ascorbic acid were heated together, which can form a yellowish complex. At room temperature in modern formulas this is not a practical concern, and many well-reviewed products contain both. Vitamin C brightens and protects against UV-related oxidative stress, while niacinamide supports the barrier and evens tone.
How to use them together
- Layer vitamin C first, then niacinamide, then moisturizer and sunscreen.
- If you notice flushing, apply them at different times.
Who should be careful
Some people get temporary flushing from niacinamide. People with very sensitive skin, rosacea or eczema should patch test new products first.
About the ingredients
Vitamin C: An antioxidant (L-ascorbic acid and derivatives) used for brightening and protection against UV-related oxidative stress. Pure L-ascorbic acid serums are acidic and can sting.
Niacinamide: Vitamin B3. Well tolerated, supports the skin barrier and helps with redness, oil and uneven tone.
FAQ
Can I use Vitamin C and Niacinamide together?
Yes. Vitamin C and niacinamide can be used together.
Should I use Vitamin C or Niacinamide in the morning or at night?
Layer vitamin C first, then niacinamide, then moisturizer and sunscreen. If you notice flushing, apply them at different times.
Who should be careful combining Vitamin C and Niacinamide?
Some people get temporary flushing from niacinamide. People with very sensitive skin, rosacea or eczema should patch test new products first.
Do I need sunscreen with Vitamin C and Niacinamide?
Yes. Daily broad-spectrum SPF 30+ is recommended with any active skincare routine.
Sources
Studies and reviews on these ingredients and, where available, on this specific combination.
- Pullar JM, Carr AC, Vissers MCM. The roles of vitamin C in skin health. Nutrients. 2017;9(8):866.
- Al-Niaimi F, Chiam NYZ. Topical vitamin C and the skin: mechanisms of action and clinical applications. J Clin Aesthet Dermatol. 2017;10(7):14-17.
- Bissett DL, et al. Niacinamide: a B vitamin that improves aging facial skin appearance. Dermatol Surg. 2005;31(7 Pt 2):860-865.
Related combinations
- Can you use Retinol with Vitamin C?
- Can you use Retinol with Niacinamide?
- Can you use Tretinoin with Vitamin C?
- Can you use Tretinoin with Niacinamide?
- Can you use Vitamin C with Salicylic Acid?
- Can you use Vitamin C with Hyaluronic Acid?
- Can you use Niacinamide with Salicylic Acid?
- Can you use Niacinamide with Hyaluronic Acid?