Is niacinamide good for dry skin?

Dry skin feels tight, looks dull and can sting when you put products on it. Niacinamide is a form of vitamin B3, and it is best known for oily and acne-prone skin. Some of its strongest research, though, is about how skin holds water. This guide covers those studies, how niacinamide compares with a plain moisturizer, and how to use it on dry skin. For the full overview, see what niacinamide does for your skin.

How skin holds water

The top layer of skin works as a barrier. It keeps water in and keeps irritants out. Fats called ceramides fill the gaps between skin cells in this layer. When there are too few of them, water escapes and the skin gets dry, rough and easily irritated. Doctors measure this with water loss through the skin: the more water escapes, the weaker the barrier.

A good moisturizer does two jobs. It adds water to the top layer, and it slows the loss of that water. Skinli's education page on moisturizer puts it simply: moisturizer puts water in your skin and keeps it there.

What niacinamide does for dry skin

Niacinamide helps the skin make more of its own barrier fats. Three sources show this.

A 2000 study in the British Journal of Dermatology. Researchers first tested niacinamide on skin cells in a dish and found the cells made more ceramides. Then they put niacinamide on people's skin. The result: "Topical application of nicotinamide increased ceramide and free fatty acid levels in the stratum corneum, and decreased transepidermal water loss in dry skin." In plain words, niacinamide on the skin raised the fats in the top layer and less water escaped.

A 2010 review in the Journal of Clinical and Aesthetic Dermatology. It reports that the rise in ceramides was confirmed in people "after topical application of 2% niacinamide emulsion for four weeks applied twice daily." An emulsion is a lotion or cream.

A 2004 review in the Journal of Cosmetic Dermatology. It says niacinamide on the skin steadies the barrier, "seen as a reduction in transepidermal water loss and an improvement in the moisture content of the horny layer." The horny layer is the outer layer of skin.

Niacinamide cream vs petrolatum

Petrolatum, also called petroleum jelly, is one of the most common moisturizers. It sits on the skin and slows water loss. A 2005 trial in the International Journal of Dermatology compared it with a niacinamide cream.

Detail	What the trial did
People	28 adults with eczema and dry skin on both forearms
Products	2 percent niacinamide cream on the left forearm, white petrolatum on the right
How often	Twice a day
How long	4 or 8 weeks
Result	Niacinamide lowered water loss; petrolatum did not change it enough to count. Both raised skin moisture, and niacinamide raised it more

The authors concluded that niacinamide cream "is a more effective moisturizer than white petrolatum on atopic dry skin." Atopic means linked to eczema. This is one small trial on the arms, and faces may respond differently. Still, it is direct evidence that a niacinamide cream can moisturize dry skin.

Niacinamide and dryness from acne treatments

Acne treatments such as adapalene, tretinoin and benzoyl peroxide often dry the skin. Dryness is one of the main reasons people stop them early. Niacinamide may help here.

In a 2006 trial published in Cutis, women used tretinoin cream 0.025 percent on the whole face every day. Before and during the tretinoin, they put one moisturizer on one side of the face and another on the other side. One moisturizer held vitamins, including niacinamide. The other held similar moisturizing ingredients without the vitamins. The authors found that the vitamin moisturizer made the first weeks of tretinoin easier and improved the results. The moisturizer held more than one vitamin, so the effect cannot be credited to niacinamide alone.

A 2026 review in Skin Health and Disease also describes a cream with ceramides, sugars and 5 percent niacinamide that reduced dry skin and irritation in people taking isotretinoin pills, and helped them keep taking the treatment for 6 months.

If an acne treatment is drying your face, see retinoid dryness and peeling for the full set of steps.

Serum or cream for dry skin?

Every dry skin study in this guide tested niacinamide inside a cream, lotion or moisturizer. A serum is lighter and often water-based. It can add niacinamide, but it does less to slow water loss on its own.

For dry skin, the simplest option is a moisturizer that already contains niacinamide. If you prefer a serum, use it on clean skin and put a moisturizer on top. The American Academy of Dermatology names these ingredients for dry or sensitive skin: hyaluronic acid, which "helps lock in water"; ceramides, which "help strengthen your skin barrier"; glycerin; and colloidal oatmeal, which can soothe irritated skin. A cream that combines niacinamide with some of these covers both jobs.

What strength to use on dry skin

The dry skin studies used 2 percent niacinamide. A 2005 safety review found no irritation from niacinamide up to 5 percent and no stinging up to 10 percent in human tests. For dry skin, 2 to 5 percent in a cream matches the research. A high-strength serum adds strength without added proof for dryness. The niacinamide percentage guide compares each strength.

How to use niacinamide on dry skin

• Wash gently. Use lukewarm water and a mild cleanser, no more than twice a day.
• Apply on skin that is still damp, then moisturize right away to hold the water in.
• Use a cream with 2 to 5 percent niacinamide once or twice a day.
• Wear sunscreen in the morning, SPF 30 or higher.
• Patch test first on the underside of the arm for 7 to 10 days. The steps are in how to patch test a new skincare product.
• Give it 4 weeks. The dry skin studies ran 4 to 8 weeks.

A simple routine for dry skin with niacinamide

This routine keeps the number of products low, so it is easy to see what helps and what stings.

Time	Step	Why
Morning	Rinse with lukewarm water, or a mild cleanser	Gentle washing protects the top layer of skin
Morning	Cream with 2 to 5 percent niacinamide	The dry skin trials tested niacinamide inside a cream
Morning	Sunscreen, SPF 30 or higher	Protects skin every day, and more so with acne treatments
Night	Mild cleanser	Removes sunscreen and the day's dirt
Night	Your acne treatment, if you use one	Goes on clean, dry skin
Night	The same niacinamide cream, or a thicker one	Holds water in overnight

If you use an acne treatment and it stings, some people put the moisturizer on first and the treatment on top. The American Academy of Dermatology describes this for retinoids and says to make such changes with your dermatologist's help. The order to apply acne products guide explains the usual order.

Habits that make dry skin worse

A good cream cannot make up for habits that strip the skin. Watch for these:

• Hot water. The American Academy of Dermatology warns that hot water can irritate your skin. Use warm or lukewarm water on the face.
• Scrubbing. The American Academy of Dermatology says scrubbing irritates the skin. Rough cloths and grainy scrubs work against the barrier that niacinamide supports.
• Foaming or harsh cleansers. A cleanser that leaves skin squeaky and tight has removed too much.
• Too many active products at once. Retinoids, acids and benzoyl peroxide together dry the skin faster than any one alone. Add one at a time.
• Skipping moisturizer in the morning. Dry skin needs it twice a day, and in cold or dry weather it may need a thicker one at night.

What the dry skin studies did not test

The research here is small. The 2005 trial had 28 people and tested forearms, and faces can respond differently. The 2000 study measured skin fats and water loss, and it did not score how dry the skin looked or felt. None of the studies tested a 10 percent serum on dry skin, and none followed people for longer than 8 weeks. Treat niacinamide as a helpful ingredient in a moisturizer, with modest proof, and judge it by how your own skin feels after 4 weeks.

Dry skin that needs a doctor

See a doctor if dry skin cracks or bleeds, itches enough to keep you awake, spreads, or does not improve after a few weeks of steady moisturizing. Red, itchy, scaly patches can be eczema, which may need a prescription treatment. If your skin is dry because of a prescription acne medicine, ask the doctor who prescribed it before you change your routine, and do not stop the medicine on your own.