Niacinamide 10 Serum 40ml

Use morning and/or evening after cleansing and toner.

Apply 2–3 drops evenly across the face, concentrating on areas of uneven tone or visible post-breakout marks if needed.

Gently pat until absorbed, then follow with moisturiser.

If using in the morning, always finish with broad-spectrum SPF.

If your skin is new to high-strength niacinamide or tends to be reactive, begin once daily or every other day before increasing use.

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Tips to get the most out of it

• If dark spots are your main concern, daily SPF matters just as much as your brightening serum. UV exposure can maintain and deepen pigmentation while you're trying to fade it

• Don't apply more serum because you want marks to disappear faster. A thin, consistent layer is enough

• Check the rest of your routine for niacinamide. It is now included in many toners, essences, serums, moisturisers and sunscreens, so you may already be using more than you realise

• If your skin begins feeling persistently hot, itchy or unusually red, reduce frequency rather than trying to “push through”

• You do not need to use this only on individual spots. Niacinamide works well across the whole face when uneven tone, oiliness or visible pores are broader concerns

• Brown post-acne marks and active acne are different problems. This serum can be useful for the marks and oil balance, but persistent acne may still need a dedicated acne treatment

• Give pigmentation time. Consistency over several weeks matters more than constantly switching between brightening products

• If you're already using another strong pigmentation serum containing niacinamide + tranexamic acid, you probably don't need both. Choose one well-formulated treatment and use it consistently

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Patch-test first! Every skin is unique—what one person tolerates beautifully may irritate another. Dab a small amount behind your ear or along the jawline and wait 24 hours before full use.

What is JUMISO Niacinamide 10 Serum best for?

Its strongest use case is a combination of dark spots, uneven skin tone, excess oil and visible pores.

It is particularly interesting if you experience post-breakout pigmentation alongside an oily or combination T-zone, because the formula addresses both pigmentation and sebum rather than treating only one concern.

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Is 10% niacinamide strong?

It is a relatively high concentration compared with the amounts used in much of the published clinical research.

Studies have demonstrated benefits for sebum at 2% and pigmentation at 2–5%, so you do not need to believe that higher automatically means better.

10% can still be well tolerated, and safety testing has reported no stinging at concentrations up to 10%, although irritation testing has historically been stronger at concentrations up to 5%.

If your skin already loves niacinamide, this concentration may be perfectly comfortable. If you are very reactive, introduce it gradually.

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Is JUMISO Niacinamide 10 Serum good for dark spots?

Yes — dark spots and uneven pigmentation are among its main purposes.

Niacinamide has evidence for reducing visible hyperpigmentation, and tranexamic acid has also been studied topically for pigmentation. A randomized, double-blind trial specifically found improvement from a formula combining niacinamide and tranexamic acid.

The important partner is SPF. Brightening products have a much harder job if UV exposure continues stimulating pigmentation.

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Will it fade post-acne marks?

It may help if the marks are flat areas of darker pigmentation left after the blemish has healed.

Those are commonly called post-inflammatory hyperpigmentation.

If you have indented, pitted or raised acne scars, those involve changes to skin structure and a brightening serum should not be expected to remove them.

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Does it treat acne?

We would not sell this as an acne treatment.

Niacinamide can help regulate excess sebum, and the formula contains Zinc PCA and succinic acid, which make sense within a blemish-prone routine. But active or persistent acne may require a dedicated treatment.

Think of this serum primarily as pigmentation + oil + pore support, rather than your entire acne routine.

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Does niacinamide shrink pores?

Not permanently.

Pore size is influenced by factors including genetics, sebum production and skin structure.

What niacinamide can do is help reduce excess sebum. When pores are less oily or congested, they may look cleaner and less prominent.

So we prefer “reduces the appearance of pores” rather than promising to physically shrink them away.

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Can sensitive skin use JUMISO Niacinamide 10 Serum?

JUMISO specifically describes the formula as suitable for sensitive skin and includes Asiaticoside, Madecassic Acid and Asiatic Acid as its Triple Centella Complex.

We would still be slightly more cautious.

10% niacinamide is higher than the concentration needed to demonstrate many of niacinamide's established benefits. If you know your skin reacts easily to high-niacinamide formulas, start slowly rather than assuming the Centella guarantees that it won't irritate you.

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Can I use it with Vitamin C?

Yes.

The old idea that niacinamide and Vitamin C must never be used together is not a practical rule you need to follow with modern skincare formulations.

If your skin comfortably tolerates both, they can sit within the same routine.

If you prefer fewer layers, an easy option is:

Morning: Vitamin C → moisturiser → SPF

Evening: JUMISO Niacinamide 10 Serum → moisturiser

You don't get extra points for fitting every brightening ingredient into one routine.

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Can I use it with retinol or retinal?

Yes, they can be used within the same overall routine.

Niacinamide itself doesn't need to be separated from retinoids.

If your retinoid already makes your skin sensitive, however, introducing another concentrated serum at the same time can make it difficult to work out what caused irritation.

An easy option is:

Morning: JUMISO Niacinamide Serum → moisturiser → SPF

Evening: Retinol/retinal → moisturiser

Once you know your skin tolerates both, you can simplify or layer them differently.

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Can I use it with AHA or BHA?

Potentially, yes.

There isn't an automatic incompatibility between niacinamide and exfoliating acids.

But if your routine already contains strong acids, retinoids and other active treatments, adding everything at once can still irritate your skin even when the ingredients are technically compatible.

Your skin responds to the whole routine, not to an ingredient compatibility chart.

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Can I use it with azelaic acid?

Yes.

Both can be useful for uneven tone and post-breakout marks, but you don't necessarily need to start them simultaneously.

If your skin is sensitive, use one in the morning and one in the evening or introduce them on different weeks so you can understand how your skin responds.

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Will JUMISO Niacinamide 10 Serum cause purging?

Niacinamide is not normally considered an ingredient that causes true skin purging in the way that treatments accelerating cell turnover can.

If you develop persistent new bumps, itching or redness after introducing the serum, don't automatically assume that you need to “push through the purge”.

It may simply be irritation or a formula that doesn't suit your skin.

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How long will dark spots take to fade?

Don't expect overnight results.

Clinical studies of niacinamide have shown pigmentation changes after several weeks of consistent use, while stubborn post-inflammatory pigmentation can take considerably longer.

We would judge a brightening routine over weeks to months, while using SPF consistently, rather than deciding whether it works after a handful of applications.

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Should I choose JUMISO Niacinamide 10% or 20% Serum?

For most people, 10% is already a substantial niacinamide concentration.

The published evidence demonstrating niacinamide's benefits does not establish that 20% gives double the results of 10%, and much of the clinical evidence actually uses lower concentrations.

If you are deciding where to begin, we would normally consider the 10% formula first unless you already know your skin responds particularly well to very high-strength niacinamide.

More skincare is not automatically better skincare.

Full Ingredients (INCI)

Water, Niacinamide, Propanediol, Butylene Glycol, Methylpropanediol, Tripropylene Glycol, 1,2-Hexanediol, Hydroxyacetophenone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Arginine, Glycereth-25 PCA Isostearate, Glycerin, Ethylhexylglycerin, Tranexamic Acid, Trisodium Ethylenediamine Disuccinate, Gardenia Florida Fruit Extract, Dextrin, Biosaccharide Gum-1, Zea Mays (Corn) Kernel Extract, Dipropylene Glycol, Backhousia Citriodora Leaf Extract, Glutathione, Hyaluronic Acid, Hydrogenated Lecithin, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Polyglyceryl-10 Oleate, Asiaticoside, Hedera Helix (Ivy) Extract, Madecassic Acid, Asiatic Acid, Fructan, Zinc PCA, Glucose, Paeonia Suffruticosa Root Extract, Portulaca Oleracea Extract, Allantoin, Hexylresorcinol, Squalane, Succinic Acid, Artemisia Princeps Leaf Extract, Rhodiola Rosea Root Extract.

Key Ingredients Explained

Niacinamide 10% – Vitamin B3 and the main active in the formula. Niacinamide has evidence for helping uneven pigmentation, excess sebum and skin-barrier function. Importantly, 10% is already a high cosmetic concentration; more isn't automatically more effective.

Tranexamic Acid – A pigmentation-focused ingredient increasingly used in topical skincare for dark spots and uneven tone. Research supports topical tranexamic acid for hyperpigmentation, including formulations combined with niacinamide.

Glutathione – An antioxidant included to complement the brightening formula. We view it as a supporting ingredient here rather than the reason to buy the serum — niacinamide and tranexamic acid have clearer clinical evidence behind their pigmentation roles.

Triple Centella Complex – Asiaticoside, Madecassic Acid and Asiatic Acid are components derived from Centella Asiatica and are included to support calmer, more comfortable skin alongside the concentrated brightening formula. JUMISO specifically highlights this complex within the product.

Zinc PCA – Combines zinc with PCA and is commonly included in formulas aimed at oily and blemish-prone skin. Here it complements niacinamide's oil-balancing role.

Hyaluronic Acid, Hydrolyzed Hyaluronic Acid & Sodium Hyaluronate – Three forms of hyaluronic-acid-based humectants that help attract water and prevent a pigmentation-focused serum from feeling unnecessarily drying.

Squalane – A lightweight emollient that helps keep skin soft and comfortable without turning the serum into a rich or oily treatment.

Succinic Acid – Included within the pore and oil-focused side of the formula. We would treat this as a supporting ingredient rather than claim this serum works like a dedicated acne or exfoliating treatment.

Hexylresorcinol – A supporting brightening ingredient used in formulas targeting uneven pigmentation.

Allantoin & Purslane Extract – Skin-conditioning ingredients included to help balance the stronger treatment focus of the formula.

Ingredients may change at the manufacturer's discretion. Always check the packaging if you have a known ingredient sensitivity.