Can You Use Vitamin C With Niacinamide?
Yes.
The old warning came from 1960s research on heat-forced reactions that formed nicotinic acid. Modern cosmetic formulas at room temperature do not reproduce it, and the pair is now considered complementary.
How to use Vitamin C and Niacinamide
Layer freely. If you notice transient flushing, apply niacinamide in the morning and vitamin C in the evening.
General guidance from common dermatological advice, not medical advice. If you use a prescription treatment, follow your prescriber’s instructions.
In the catalog
Products that already contain both
A single formula that combines the two has been balanced by the brand, which is not the same as layering two separate treatments.

Sunscreen
Round Lab
Birch Juice Moisturizing Sun Cream SPF50+ PA++++

Moisturizer
Celimax
Pore + Dark Spot Brightening Cream

Spot Treatment
Celimax
The Vita-A Retinal Shot Tightening Booster

Serum
Dr. Althea
Vitamin C Boosting Serum

Toner
Anua
Rice 70 Glow Milky Toner

Spot Treatment
Arencia
Vitamin C Booster Shot

Serum
COSRX
Advanced The Vitamin C 23 Serum

Eye Cream
Mary&May
Tranexamic Acid+Glutathione Eye Cream
Layering
Related pairings
- Retinol with Vitamin CSeparate or space out
- Vitamin C with AHASeparate or space out
- Vitamin C with BHASeparate or space out
- Benzoyl Peroxide with Vitamin CSeparate or space out
- Peptides with Vitamin CSeparate or space out
- Niacinamide with RetinolWorks well together
Check your actual products
The Routine Check reads the actives in each product you add, flags every clash between your morning and evening steps, and puts them in the order to apply them.
Check my routine