COS DE BAHA NZ Niacinamide 20% Zinc PCA 4% Serum – Korean Pore & Uneven Tone Care

• Product type: High-concentration niacinamide facial serum
• Size / volume: 30 ml / 1.0 fl. oz.
• Primary concerns: Enlarged-looking pores, uneven skin tone, excess sebum, blemish-prone skin, visible redness, dullness and uneven-looking texture
• Skin types: Suitable for multiple skin types and particularly relevant to oily and blemish-prone complexions; the manufacturer does not recommend this 20% formula for first-time niacinamide users
• Key ingredients: 20% niacinamide (vitamin B3), 4% Zinc PCA, arbutin, sodium hyaluronate, allantoin, caffeine, aloe vera, green tea, elderflower, bitter melon and edelweiss extracts
• Texture: Concentrated moisturizing serum; the manufacturer notes that its high niacinamide and moisturizing-ingredient content can create a sticky feel when too much is applied
• Finish: Hydrated, smooth and refined-looking when applied sparingly
• Formula notes: Formulated without hydroquinone
• Usage: After cleansing and toner, apply a small amount to the face with fingertips and allow it to absorb before moisturizer; the manufacturer recommends approximately 1–2 drops rather than a large amount
• Routine placement: Use after cleansing and toner and before moisturizer, morning or night; during daytime use, finish with sunscreen of SPF 30 or higher
• Origin: Made in South Korea
• Storage: Keep tightly closed and store away from excessive heat and direct sunlight
• Caution: This is a highly concentrated 20% niacinamide formula. Patch test at least 24 hours before regular use. Sensitive skin may experience stinging, burning or an allergic reaction. Introduce gradually, avoid direct eye contact and discontinue immediately if irritation occurs

Core Product Details

A High-Concentration Ritual for Pores, Tone & Clarity

COS DE BAHA NZ Niacinamide 20% Zinc PCA 4% Serum brings unapologetically concentrated skincare into a refined South Korean beauty ritual. At its heart is an impressive 20% niacinamide concentration paired with 4% Zinc PCA, creating targeted care for enlarged-looking pores, uneven tone, excess sebum and blemish-prone complexions. Designed for skin already familiar with niacinamide, this Korean pore serum transforms a deceptively simple daily step into focused care for a complexion that looks smoother, clearer and beautifully balanced.

20% Niacinamide for Visible Pores & Uneven-Looking Tone

Niacinamide, also known as vitamin B3, takes centre stage at a potent 20% concentration. COS DE BAHA positions the ingredient to help diminish the appearance of enlarged pores, address uneven-looking skin tone and improve the appearance of dull, blemish-marked skin. Arbutin further complements the complexion-focused formula, making NZ Serum particularly compelling for those searching for high-strength Korean niacinamide skincare for pores, discoloration and visible post-blemish marks.

4% Zinc PCA for a More Balanced-Looking Complexion

The pairing with 4% Zinc PCA gives this concentrated serum particular relevance to oily and blemish-prone skin. COS DE BAHA's Niacinamide Line is designed around concerns including pores and sebum secretion, allowing NZ Serum to become an elegant treatment step for complexions that crave refinement without a heavy finish. Rather than masking texture beneath richness, it focuses attention on balance, clarity and the beautifully polished appearance associated with a considered K-Beauty routine.

Hydration & Comfort Within a Potent Formula

Despite its high active concentration, NZ Serum surrounds its niacinamide and zinc pairing with aloe vera, glycerin and sodium hyaluronate for moisture support, while allantoin contributes a comforting, skin-conditioning touch. Green tea, elderflower, bitter melon and edelweiss extracts complete the botanical composition. The result is a concentrated serum that marries visible pore and tone care with the hydration expected from a sophisticated Korean skincare ritual.

A Concentrated Texture Designed to Be Savoured Sparingly

This is one ritual where more is decidedly not more. COS DE BAHA specifically advises using only 1–2 drops because the serum's concentrated niacinamide and moisturizing ingredients can feel sticky when overapplied. A small amount is smoothed over the complexion after toner and allowed to absorb before moisturizer. If additional product is desired, the brand recommends building thin layers rather than applying a generous amount at once, preserving a more elegant and comfortable finish.

Potent Skincare That Deserves a Considered Introduction

With 20% niacinamide, NZ Serum is not positioned by COS DE BAHA as an introductory niacinamide treatment. The brand recommends that beginners become accustomed to lower concentrations before progressing to this formula and advises a 24-hour patch test before regular application. Once suited to your skin, it can be incorporated morning or night; daytime rituals should conclude with SPF 30 or higher. It is concentrated Korean skincare designed for the beauty devotee who understands that potency and restraint can be equally seductive.

The Korean Art of a Clearer, More Refined Complexion

Made in South Korea, COS DE BAHA NZ Niacinamide 20% Zinc PCA 4% Serum embodies a more focused expression of K-Beauty: high-performance actives layered with hydration and botanical care. There is an undeniable pleasure in watching a complexion appear increasingly polished—pores less prominent, tone more harmonious and skin fresh rather than overwhelmed. For those already devoted to niacinamide, this concentrated serum turns familiar skincare into a more elevated pursuit of clarity, balance and luminous confidence.

FAQ

What does COS DE BAHA NZ Niacinamide 20% Zinc PCA 4% Serum do?

It is formulated to address enlarged-looking pores, uneven skin tone, blemish-related concerns and excess sebum while supporting a smoother, brighter and more refined-looking complexion.

Is 20% niacinamide suitable for beginners or sensitive skin?

COS DE BAHA specifically states that NZ Serum's 20% niacinamide concentration is very high and does not recommend it for first-time niacinamide users. Patch testing for at least 24 hours and introducing the serum gradually are particularly important, as sensitive skin may experience stinging, burning or an allergic reaction.

How much COS DE BAHA NZ Serum should I apply?

The manufacturer recommends only 1–2 drops. Applying too much can make the serum feel sticky due to its concentrated niacinamide and moisturizing ingredients. If more is needed, apply another thin layer rather than a large amount at once.

Can COS DE BAHA NZ Serum be used morning and night?

Yes. The manufacturer's directions allow daily morning or nighttime use after toner and before moisturizer. When used during the day, COS DE BAHA recommends finishing the routine with sunscreen rated SPF 30 or higher.

Can I wear COS DE BAHA NZ Niacinamide Serum under makeup?

Yes. The serum can be used before moisturizer and makeup. Because excessive product can create stickiness, use the recommended small amount and allow each skincare layer to settle before continuing with sunscreen and makeup.

Refine the Details That Define Your Glow

For the beauty devotee ready to move beyond introductory niacinamide, COS DE BAHA NZ Serum offers a concentrated ritual where precision becomes indulgence. With 20% niacinamide, 4% Zinc PCA and a moisture-rich supporting blend, every carefully measured drop is an invitation to reveal skin that looks clearer, smoother, more balanced and irresistibly refined.