Where Does Niacinamide Go in Your Skincare Routine?

Niacinamide goes after cleansing and before moisturiser, typically as a serum or essence. It can be used morning, evening, or both. Unlike some actives, it does not require a specific time of day or careful positioning around other ingredients, which makes it one of the more straightforward additions to a routine.

The basic layering rule

Skincare is generally applied lightest to heaviest. A niacinamide serum, being water-based and relatively thin, sits early in the routine after cleansing and any toner or essence steps, and before heavier moisturisers or oils. If you use multiple serums, niacinamide can go first or second depending on the consistency of the other products. The general principle is thinner textures before thicker ones.

A simple morning routine with niacinamide looks like: cleanser, niacinamide serum, moisturiser, SPF. A simple evening routine looks like: cleanser, niacinamide serum, moisturiser, and any additional treatment such as retinol if used.

Morning, evening, or both?

Niacinamide does not increase photosensitivity, which means it can be used in the morning without any concern about sun exposure making it less effective or more irritating. Many people use it morning and evening without any issue. If you are keeping your routine minimal, either slot works — the choice comes down to what else you are using and where it fits most naturally.

Does it matter what it goes next to?

Not particularly. Niacinamide pairs well with most other ingredients and does not require spacing away from acids, vitamin C, or retinol in the way some combinations do. The main thing to keep in mind is layering order by texture rather than any specific ingredient incompatibility.

If you are using a toner with niacinamide already in it, and a separate niacinamide serum, you do not necessarily need both. Niacinamide is useful in a routine, but doubling up on the same ingredient from multiple products does not proportionally increase the benefit.

What if niacinamide is already in your moisturiser?

That is a common formulation. If your moisturiser contains niacinamide at a reasonable concentration, a separate niacinamide serum is not essential. The moisturiser step already delivers it. Where a dedicated serum is useful is when you want a higher concentration or when your moisturiser contains only a small amount of it.