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Ingredient pairing

Can you mix Vitamin B3 and Vitamin C (LAA)?

Written by Maya FaourHow we score →

Fine togetherThey're fine together.

Vitamin B3Vitamin C (LAA)

Good news, and a myth worth retiring: niacinamide and vitamin C are fine together. The old warning that they cancel out came from lab conditions that do not reflect how modern products are made.

Routine: You can use these together, morning or night.

Vitamin B3Worth paying for
Efficacy9
Barrier9
Acne8

Skip if: very sensitive in high

Vitamin C (LAA)Worth paying for
Brightening10
Efficacy9
Anti-aging7

Skip if: very sensitive, rosacea

Ask your doctor in pregnancy

Which one goes first?

Apply Vitamin C (LAA) first

  1. 1Cleanse
  2. 2Vitamin C (LAA)
  3. 3Vitamin B3
  4. 4Moisturize

On freshly cleansed skin, Vitamin C (LAA) goes on first, then Vitamin B3 over it. The rule of thumb is thinner and lower-pH first, richer last.

Adding Vitamin B3 and Vitamin C (LAA) to your routine

  1. Good news first: these two get along, so there is no special order or waiting period to manage.
  2. Still add them one at a time, a week or two apart, so if your skin does react you know which one to look at.

For your skin type Sensitive skin should ease in gently: Vitamin B3 and Vitamin C (LAA) can be mildly irritating on their own, and more so alongside another active.

This is a myth worth retiring. See it, and nine more, in the myths post →

Choosing between them instead? Vitamin B3 vs Vitamin C (LAA) →

Using a third ingredient? Check all three →Or decode a whole product label →
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Also worth checking

More pairings with Vitamin B3

More pairings with Vitamin C (LAA)

Vitamin B3 and Vitamin C (LAA), answered

Can you mix Vitamin B3 and Vitamin C (LAA)?

They're fine together. Good news, and a myth worth retiring: niacinamide and vitamin C are fine together. The old warning that they cancel out came from lab conditions that do not reflect how modern products are made.

Should you use Vitamin B3 and Vitamin C (LAA) in the morning or at night?

Either. Vitamin B3 and Vitamin C (LAA) are fine to use together, morning or night.

How should you introduce Vitamin B3 and Vitamin C (LAA)?

Good news first: these two get along, so there is no special order or waiting period to manage. Still add them one at a time, a week or two apart, so if your skin does react you know which one to look at.

What else should you not mix with Vitamin B3?

Nothing else clashes badly with Vitamin B3. It fits into most routines, though it is always wise to introduce one new product at a time.

Sources

Plus how we reach every verdict: how we score →

General guidance, not medical advice. When in doubt, introduce one product at a time.