Can You Use Niacinamide and Vitamin C Together?

Short answer: Yes, you can use niacinamide and vitamin C together. The old warning that they cancel each other out comes from laboratory work on the pure ingredients under heat, not from finished skincare. Layer them in the same routine, or use vitamin C in the morning and niacinamide in the evening if your skin reacts easily.

Question	Answer
Can they be layered?	Yes, in the same routine
Which goes first?	The thinner, more watery texture
Best split if skin reacts easily	Vitamin C in the morning, niacinamide in the evening
What they share	Both help skin look brighter and more even
What neither replaces	Your sunscreen

Where did the "don't mix them" rule come from?

From older laboratory studies on the raw ingredients, repeated online long after formulas moved on.

The worry was that vitamin C and niacinamide would react with each other, reducing both and forming nicotinic acid, which can cause temporary flushing. That reaction needed conditions such as sustained heat that your bathroom shelf does not provide. Today's serums are formulated and tested for stability as finished products, and combining the two is now widely regarded as fine. The rule survived because it is simple and sounds cautious, not because it reflects how people use skincare.

Why would you use both?

Because they work in different ways towards a similar goal: brighter, more even-looking skin.

Vitamin C is an antioxidant. Used in the morning, it gives antioxidant care during the day and helps dull skin look brighter over four to six weeks. Niacinamide, also called vitamin B3, helps skin look more even and supports a comfortable, well-functioning skin barrier. It is usually gentle and suits morning or evening use. Together they cover both brightness and evenness without relying on one ingredient to do everything.

How do you layer niacinamide and vitamin C?

Apply the thinner, more watery serum first, wait a few seconds, then the second serum, then moisturiser.

1. Cleanse and pat skin until slightly damp.
2. Apply the lighter serum and press it in.
3. Apply the second serum.
4. Moisturiser.
5. In the morning, your sunscreen.

Neither of our serums' directions sets an order for the pair, so this is a general layering option rather than an instruction. By the thin-to-thick principle, many people would apply the Exosome & Niacinamide Serum first, as the lighter texture, and the Vitamin C Brightening Serum second, as it contains jojoba, avocado and rosehip oils. Their directions are one or two pumps of the first and a few drops of the second. Our skincare layering order guide explains the thin-to-thick principle in more detail.

Should you split them between morning and evening instead?

Splitting suits easily irritated skin and people who prefer fewer layers at once.

If two serums at once feel like too much, use vitamin C in the morning, where antioxidant care is most useful, and niacinamide in the evening. You get the same two ingredients across the day with only one serum per routine. This also makes it easier to tell which product your skin likes if anything does feel uncomfortable.

Approach	How it works	Best for
Layer in the morning	For example niacinamide serum, then vitamin C, then moisturiser and sunscreen	Skin that tolerates both well; people who want one routine
Split morning and evening	Vitamin C in the morning, niacinamide at night	Skin that reacts easily; lighter layering
Alternate days	One serum per day, in rotation	Introducing the second serum gradually

What is in our two serums?

One is a fragrance-free niacinamide serum; the other is a vitamin C serum that contains fragrance.

The Exosome & Niacinamide Serum combines niacinamide with two forms of hyaluronic acid, a gentle touch of lactic acid, centella asiatica, lactobacillus ferment and apple-derived exosomes. It has no added fragrance and a soft pink tint from mineral pigment. The exosomes are plant-derived, the research on them in skincare is still young, and they have nothing to do with exosome procedures offered in clinics.

The Vitamin C Brightening Serum contains 2% natural vitamin C, 1% ferulic acid and 1% sea buckthorn, with hyaluronic acid and plant oils. It contains fragrance, so patch test it if your skin reacts easily.

Can you add anything else to the same routine?

Yes, but go carefully with additional acids and exfoliants.

The niacinamide serum already contains a small amount of lactic acid. Layering it with a strong exfoliating acid or a scrub on the same night can leave skin feeling tight or tingly. Keep exfoliation to separate evenings, two or three times a week at most. Hydrating serums, peptides and moisturisers sit comfortably alongside both.

How long before you see a difference?

Hydration from the serums is felt at once; a brighter, more even look takes weeks.

Give vitamin C four to six weeks of daily use before judging it. Niacinamide is gradual too; many people give it six to eight weeks before deciding whether it earns its place. Take a photo in the same daylight on day one and again after six weeks. Memory is a poor judge of gradual change, and anything promising a visibly different complexion within days is overselling.

What won't this combination do?

It will not remove dark spots or replace sunscreen.

Both ingredients help skin look brighter and more even over weeks of daily use. Neither removes marks, and neither protects skin from UV. If you use them without sunscreen, daily sun exposure will undo much of what they do for how your skin looks. And if a spot is new, growing or changing, show it to a doctor rather than reaching for a serum.

Common mistakes

• Avoiding the pair because of the old rule. It no longer reflects modern formulas.
• Applying both and an exfoliating acid on the same night. Spread actives out.
• Introducing two new serums on the same day. Add one, wait a few weeks, then the other.
• Judging results after a week. Allow at least four to six weeks of daily use.
• Using a huge amount of each. A few drops or one to two pumps is enough.

Frequently asked questions

Which goes first, niacinamide or vitamin C?

The usual rule is thinner and more watery first. With our two serums that would generally mean the niacinamide serum before the vitamin C serum, which contains plant oils, though neither product's directions require a set order.

Will niacinamide and vitamin C make my face red?

Many people use them together without any redness. If you notice redness or stinging, separate them into morning and evening, and stop using whichever product seems to cause it.

Do I need to wait between the two serums?

Not long. A few seconds, until the first layer no longer feels wet, is enough.

Can I use both every day?

Yes, once your skin is used to them. Introduce the second serum a few weeks after the first, then use both daily.

Is the pink tint in the niacinamide serum a fragrance or dye?

The soft pink tint comes from mineral pigment. The serum has no added fragrance.

Compare both serums, and the rest of the face range, in our skincare collection.

Last reviewed: October 2026.