Which Is Better for Me? The Jumiso Niacinamide 20 Serum or the Jumiso Niacinamide 10 Serum?

Choosing between the Jumiso Niacinamide 10 Serum and the Jumiso Niacinamide 20 Serum depends on your skin’s needs and tolerance. Both aim to brighten skin, reduce dark spots, and balance oil, but they differ in strength and supporting ingredients. If you’re new to niacinamide or have sensitive skin, the 10% formula offers steady results with less risk of irritation, while the 20% version delivers faster, more visible changes for experienced users.

The Jumiso Niacinamide 10 Serum contains a gentler concentration and more hydrating ingredients, making it ideal for daily use and gradual brightening. In contrast, the Jumiso Niacinamide 20 Serum features a high-strength formula with added brightening agents like tranexamic acid and glutathione that target stubborn pigmentation and uneven tone.

Before deciding, think about your skin’s sensitivity, current routine, and how quickly you want to see results. Both serums can fit into a consistent skincare plan, but starting with the lower concentration helps build tolerance safely.

Key Takeaways

• Jumiso’s 10% serum suits sensitive or beginner users.
• The 20% version offers stronger brightening for experienced users.
• Choose based on your skin’s tolerance and desired results.

Understanding Niacinamide and Its Benefits

Niacinamide, a form of vitamin B3, helps improve skin texture, balance oil levels, and strengthen the skin barrier. It also supports hydration and reduces visible pores, making it a useful ingredient for most skin types.

What Is Niacinamide (Vitamin B3)?

Niacinamide, also known as nicotinamide, is a water-soluble form of vitamin B3 that your body cannot store. When applied to the skin, it supports cell repair and improves how your skin retains moisture.

It plays a key role in producing energy within skin cells, helping them function properly. According to Healthline, niacinamide may reduce inflammation and improve elasticity, which helps your skin appear smoother and more even.

You can find niacinamide in serums, creams, and toners. Concentrations between 2% and 10% are common, with higher strengths offering stronger results for concerns like texture and uneven tone.

How Niacinamide Supports the Skin Barrier

Your skin barrier protects against moisture loss and irritation. Niacinamide strengthens this barrier by increasing the production of ceramides—the lipids that keep your skin hydrated and resilient.

A stronger barrier means less dryness and sensitivity. As explained by MECCA Memo, niacinamide helps your skin retain water and recover from damage caused by harsh products or environmental stress.

You may notice fewer dry patches and a smoother feel with consistent use. This function makes niacinamide especially helpful if you experience dehydration, redness, or barrier damage from exfoliating acids or retinoids.

Niacinamide’s Role in Oil Control and Pore Minimisation

Niacinamide helps regulate sebum production, which can reduce shine and prevent clogged pores. Balanced oil levels make your skin look smoother and less congested.

Research shared by Beauty Heaven notes that niacinamide visibly minimises pore size and refines texture. It also has antioxidant properties that calm inflammation and protect against environmental stress, which can enlarge pores over time.

With regular use, you can expect more balanced skin and a refined surface. This makes niacinamide useful for both oily and combination skin types.

Jumiso Niacinamide 10 Serum: Features and Suitability

This serum focuses on refining pores, balancing oil production, and brightening uneven tone. Its lightweight texture and calming ingredients make it well suited if you have oily or combination skin and want to improve texture without irritation.

Key Ingredients in Jumiso Niacinamide 10 Serum

The Jumiso Niacinamide 10 Serum contains a 10% concentration of niacinamide, a form of vitamin B3 that supports skin barrier strength and reduces dullness. It also helps control oil levels without drying your skin.

It includes tranexamic acid, which targets mild discolouration and helps fade dark spots. Succinic acid supports pore-tightening and provides mild exfoliation, helping to smooth rough texture.

Hydrating agents like hyaluronic acid, glycerin, and squalane act as humectants and emollients. They draw in and lock moisture, preventing dehydration that can trigger excess sebum production.

The formula also features allantoin, known for soothing sensitivity and promoting healing. The combination of these ingredients creates a balanced blend of brightening, hydrating, and skin-calming effects.

For more details on the ingredient composition and their functions, you can read the Jumiso Niacinamide 10 Serum ingredients breakdown.

Benefits for Oily and Combination Skin

If your skin often feels greasy in some areas but dry in others, this serum helps restore balance. The 10% niacinamide content regulates sebum production, reducing shine while maintaining hydration.

Succinic acid and tranexamic acid help refine texture and fade mild marks without harsh acids. These actives make the formula effective for acne-prone or uneven skin.

The inclusion of hyaluronic acid and squalane ensures moisture retention. This prevents the skin from overproducing oil, a common issue in combination skin.

Because it’s lightweight and fragrance-free, it absorbs quickly and layers well under sunscreen or moisturiser. Many users find it comfortable for daily use, both morning and night.

Performance on Enlarged Pores and Excess Oil

You may notice improvement in pore visibility after consistent use. Niacinamide strengthens the skin barrier and reduces excess oil that can stretch pores over time.

Succinic acid works with niacinamide to refine the skin’s surface. It helps keep pores clear and less noticeable by reducing buildup and smoothing texture.

The serum’s hydrating components—hyaluronic acid, glycerin, and squalane—maintain moisture balance. This prevents the skin from becoming overly dry or overly oily.

When used twice daily after cleansing and toning, the formula supports a matte yet hydrated finish. Reviews on Joshwa Saint James highlight its ability to manage oil production while keeping the skin barrier healthy.

Jumiso Niacinamide 20 Serum: Features and Suitability

This serum offers a high concentration of 20% niacinamide to help improve uneven tone, reduce dark spots, and strengthen your skin barrier. It combines brightening and soothing ingredients to target pigmentation while remaining gentle enough for sensitive skin.

Key Ingredients in Jumiso Niacinamide 20 Serum

The Jumiso Niacinamide 20 Serum uses a potent blend of actives that focus on brightening and barrier repair. The star ingredient, 20% niacinamide, supports clearer skin by reducing excess oil, shrinking visible pores, and improving texture.

It also includes tranexamic acid and glutathione, known for their ability to fade pigmentation and even out skin tone. Tranexamic acid helps slow melanin transfer, while glutathione offers antioxidant protection from environmental stress.

A triple centella complex—made up of asiaticoside, madecassic acid, and asiatic acid—calms irritation and supports healing. Hexylresorcinol, a mild brightening agent, works alongside niacinamide to enhance radiance.

Learn more about its ingredient breakdown at INCIDecoder.

Targeting Hyperpigmentation and Dark Spots

If you’re dealing with hyperpigmentation or stubborn dark spots, this serum aims to improve those concerns through multiple pathways. The 20% niacinamide concentration helps fade surface-level discolouration by reducing the appearance of uneven tone and dullness.

Tranexamic acid plays a key role in blocking melanin transfer, which helps prevent new spots from forming. Glutathione and hexylresorcinol further support this process by brightening and protecting the skin from oxidative stress.

Clinical results shared by Jolse show visible improvements in pigmentation and redness within two weeks of consistent use. With regular application, you can expect a more balanced and refined complexion.

Suitability for Sensitive and Reactive Skin

Despite its high niacinamide content, the formula remains gentle enough for sensitive and reactive skin. The triple centella complex—including asiaticoside, madecassic acid, and asiatic acid—helps calm redness and irritation while strengthening the skin barrier.

It is fragrance-free and non-comedogenic, which reduces the risk of breakouts or stinging. The lightweight texture absorbs quickly without leaving residue, making it suitable for layering under moisturiser or sunscreen.

If your skin tends to react easily, introduce the serum gradually—start with a few drops every other night. Over time, your skin can adjust to the 20% niacinamide, allowing you to benefit from its brightening and barrier-strengthening effects without discomfort.

Comparing Jumiso Niacinamide 10 vs 20 Serum

Both Jumiso Niacinamide serums aim to brighten skin tone, reduce acne marks, and improve texture. The main difference lies in their niacinamide strength and supporting ingredients, which affect how quickly you see results and how suitable each serum is for different skin types.

Differences in Concentration and Formula

The Jumiso Niacinamide 10 Serum contains 10% niacinamide, a concentration that balances effectiveness with gentleness. It suits beginners or those with sensitive skin who want to even out tone and refine pores without irritation.

The Jumiso Niacinamide 20 Serum doubles that strength to a 20% niacinamide concentration, delivering faster results for stubborn pigmentation and acne scars. It also includes tranexamic acid and glutathione, which target melasma and dark spots.

Both formulas include hyaluronic acid for hydration and Centella Asiatica extracts to calm redness. They are fragrance-free and cruelty-free, aligning with the K-beauty focus on gentle yet effective Korean skincare. 

Expected Results and Timeline

You can expect smoother texture and smaller-looking pores within a few weeks of regular use. The 10% serum tends to show gradual results in 4–6 weeks, while the 20% version may deliver visible brightening and reduced acne marks in about 2–4 weeks.

Because of its stronger actives, the 20% serum may cause mild tingling on dry or reactive skin. Patch testing helps you gauge tolerance before daily use.

Both serums support clearer skin by balancing oil production and strengthening your barrier. The 20% formula’s added antioxidants may enhance radiance and reduce uneven skin tone faster, but the 10% option remains safer for long-term maintenance.

Which Skin Types Benefit Most from Each Serum

If you have sensitive or dry skin, the 10% serum is easier to tolerate. It hydrates while improving mild discolouration and rough texture. Those new to niacinamide will find it a gentle starting point.

The 20% serum suits oily, acne-prone, or pigmentation-prone skin. Its higher concentration targets acne scars, melasma, and more noticeable uneven skin tone. The inclusion of antioxidants like glutathione helps reduce oxidative stress and improve clarity.

For combination skin, you can use the 10% serum daily and apply the 20% serum as a targeted treatment for dark spots. Both options align with K-beauty’s layering approach, allowing you to customise your routine for your skin’s needs.

How to Incorporate Jumiso Serums into Your Skincare Routine

You can get the best results from Jumiso serums by applying them correctly, combining them with compatible ingredients, and protecting your skin from UV damage. Consistent use helps improve hydration, skin elasticity, and the appearance of blemishes and uneven tone.

Application Tips for Maximum Benefits

Apply your Jumiso Niacinamide Serum after cleansing and toning. Use 2–3 drops and gently pat it into your skin until absorbed. This helps the niacinamide penetrate effectively and support collagen production for smoother texture.

If you use both the 10% and 20% versions, apply only one at a time. The Jumiso Niacinamide 10% Serum suits daily use, while the 20% formula works best for targeted dark spots or uneven tone.

Wait one to two minutes before layering your moisturiser to lock in hydration. This step also prevents product pilling. Use gentle upward motions to boost circulation and improve absorption.

For sensitive skin, start with the 10% serum and increase usage gradually. Overuse may cause temporary redness or dryness, especially if your skin barrier is weak.

Pairing with Other Skincare Ingredients

Niacinamide pairs well with hyaluronic acid, ceramides, and panthenol, which help maintain moisture and calm irritation. You can layer these before or after your serum depending on texture—lighter products first, heavier ones last.

Avoid using strong acids like pure vitamin C or high-strength exfoliants at the same time, as they can reduce niacinamide’s stability. Instead, alternate them—use niacinamide in the morning and acids at night.

For anti-ageing benefits, combine the serum with peptides or retinol on separate days. This supports collagen production and skin elasticity without overwhelming your skin.

If your goal is to reduce blemishes, pair the serum with tranexamic acid or centella asiatica products, which help brighten and soothe inflammation.

Importance of Broad-Spectrum SPF

Niacinamide helps repair and strengthen your skin barrier, but it does not protect against UV rays. Always apply a broad-spectrum SPF 30 or higher during the day to prevent sun damage and maintain your results.

UV exposure can undo the brightening and anti-ageing benefits of your serum. Consistent sunscreen use helps prevent hyperpigmentation, fine lines, and loss of elasticity.

Choose a lightweight, non-comedogenic sunscreen that layers well over your serum and moisturiser. Reapply every two hours if you’re outdoors.

A simple morning routine might look like this:

1. Cleanser
2. Toner
3. Jumiso Niacinamide Serum
4. Moisturiser
5. Broad-spectrum SPF

This combination keeps your skin hydrated, even-toned, and protected throughout the day.

Safety and Ethics

Both Jumiso niacinamide serums are designed with skin safety and ethical production in mind. You can expect cruelty-free testing standards, gentle formulations, and access through reputable online retailers that sell verified Korean skincare.

Cruelty-Free and Vegan Credentials

Jumiso operates under a cruelty-free policy, meaning the brand does not test its products or ingredients on animals. All Jumiso serums, including the Niacinamide 10 and Niacinamide 20, are marked as cruelty-free and reef-safe.

While most Jumiso products are vegan-friendly, some may include small amounts of animal-derived ingredients such as snail mucin in other product lines. Always check the ingredient list before purchase if you prefer a fully vegan routine.

The brand’s name itself—derived from the Korean words meaning “to give a smile”—reflects its focus on ethical and positive skincare practices. Jumiso’s approach supports responsible beauty standards, making it a suitable choice if you value brands that avoid animal testing and promote sustainable manufacturing.

Potential Side Effects and Precautions

Both serums use niacinamide, a well-tolerated ingredient for most skin types. However, the Niacinamide 20 Serum contains a higher concentration that may cause mild irritation, redness, or dryness if your skin is sensitive or new to active ingredients.

To reduce risk, patch test the product before full use. Apply a small amount behind your ear or on your inner arm and wait 24 hours. If no reaction occurs, it’s usually safe to apply to your face.

Avoid layering the serum with strong acids or retinol until you know how your skin responds. If you experience stinging or prolonged redness, reduce frequency or switch to the gentler 10% version.