Niacinamide (Vitamin B3): What It's For and What the Science Says

August 15 2026, 4 min reading time

What is niacinamide, what are its benefits according to studies (spots, skin barrier, pores), and how to use it properly in your routine.

Niacinamide, also called vitamin B3, is a cosmetic ingredient with clinical research behind it. If you're wondering what it's for and how it can fit into a routine, here you'll find an explanation based on available evidence, without miraculous promises.

What is niacinamide?

Niacinamide is a water-soluble form of vitamin B3 found in serums, creams, and other facial care products. It is used for its compatibility with different routines and its tolerance profile, although the final experience depends on the complete formula and the needs of each skin type.

What is it for? What the evidence supports

Dermatological research has studied niacinamide in relation to various aspects of skin care:

Appearance of spots and uneven tone: it can influence the transfer of melanosomes from melanocytes to the superficial skin cells. In clinical studies, formulations with this ingredient have been associated with improvements in the appearance of hyperpigmentation and uneven tone.
Skin barrier: some formulations have been linked to supporting skin lipids, including components like ceramides, which participate in barrier function.
Appearance of redness and texture: it has been investigated for its antioxidant properties and its possible contribution to a more uniform-looking skin.
Continuous cosmetic use: improvements, when they occur, are usually evaluated after weeks of consistent use, not after a few days.

What do studies say?

A 12-week clinical study with a 5% niacinamide formula observed improvements versus control in the appearance of fine lines, spots, redness, texture, and dull tone. Other works have evaluated this ingredient in formulations for the appearance of hyperpigmentation, with results that depend on the concentration, the cosmetic vehicle, and the consistency of use.

An important nuance: cosmetics can improve the appearance of the skin, but they do not replace a diagnosis or medical treatment. Daily sun protection is especially important when the goal is to care for the appearance of spots or uneven tone.

How to use it in your routine

Cleanse your face with a product suitable for your skin.
Apply toner or essence if they are part of your routine.
Apply a niacinamide serum to clean skin. Our TIAM Vita B3 Source Serum with Niacinamide 10% + Arbutin fits here, always following the product's usage instructions.
Finish with a comfortable moisturizer.
In the morning, finish with sunscreen as the last step of the routine.

What concentration to choose?

Facial care formulas can include different concentrations. In clinical studies, concentrations such as 4% or 5% have been evaluated for the appearance of spots and other skin parameters. A higher concentration does not guarantee a better result for everyone; if your skin is sensitive or you are introducing the ingredient for the first time, it is advisable to start gradually and observe tolerance.

Can it be combined with other active ingredients?

Niacinamide usually integrates well with moisturizing ingredients like hyaluronic acid and with usual steps of a Korean routine. If you use exfoliants, retinoids, or other intensive active ingredients, incorporate changes one by one and follow the recommendations of each formula.

Frequently asked questions

Is niacinamide good for spots?
Formulations with this ingredient have been studied for their effect on pigment transfer and can help improve the appearance of spots with consistent use. Daily photoprotection is essential.

Can it be used every day?
It can be used daily if the formula is well tolerated and the manufacturer indicates such use. Always follow the recommended frequency on the packaging.

Can it fit oily skin or skin with visible pores?
It can be attractive for those looking for a light texture and a routine focused on the appearance of tone and texture. The response depends on the complete formula and the skin.

Can it irritate?
Many people tolerate it well, but any cosmetic product can cause a reaction. Perform a patch test and reduce frequency or discontinue use if you notice irritation.

In summary

Niacinamide has clinical evidence in cosmetic formulations for the appearance of spots, redness, texture, and barrier function. Use it consistently, adjust the routine to your skin's tolerance, and complete daytime care with sun protection. You can explore the TIAM Vita B3 Source Serum with Niacinamide 10% + Arbutin within a simple routine.