Niacinamide vs Vitamin C: Which Do You Need?

Vitamin C and niacinamide are two of the most popular ingredients in skincare — and two of the most frequently confused. They overlap in some benefits, but they work very differently.

Vitamin C: the radiance-giver

Vitamin C is an antioxidant that neutralises free radicals from UV and pollution. It also interrupts the production of excess pigment, which is why it's so good for dullness and dark spots. It performs best in the morning, under sunscreen, where it adds an extra layer of defence.

Niacinamide: the balancer

Niacinamide (vitamin B3) is a multitasker. It helps regulate oil, strengthens the barrier by boosting ceramide production, reduces the look of pores and helps even out post-acne marks. It's also exceptionally well tolerated.

So which should you choose?

It depends on your main concern:

• Dull, tired-looking skin or sun spots → start with vitamin C
• Oiliness, visible pores or a weakened barrier → start with niacinamide
• Post-acne marks → both help; niacinamide is gentler to begin with

Can you use them together?

Yes. The old rule about not combining them came from studies using unstable forms at high heat. Modern formulas play well together. Use vitamin C first in the morning, let it absorb, then follow with niacinamide — or simply use vitamin C in the morning and niacinamide at night.

“Think of vitamin C as your shield and niacinamide as your foundation. Most skin benefits from both.”