COS DE BAHA TN Tranexamic Acid 5% Niacinamide 5% Serum – Korean Dark Spot & Brightening Care

• Product type: Tranexamic acid and niacinamide brightening facial serum
• Size / volume: 30 ml / 1.0 fl. oz.
• Primary concerns: Hyperpigmentation, stubborn dark spots, post-blemish marks, post-inflammatory hyperpigmentation, uneven-looking skin tone and dullness
• Skin types: Suitable for all skin types according to current manufacturer positioning; sensitive skin should patch test before use
• Key concentrations: 5% tranexamic acid and 5% niacinamide
• Key ingredients: Tranexamic acid, niacinamide, aloe vera leaf extract, glycereth-26, betaine, sodium hyaluronate, allantoin, green tea extract, elderflower extract, bitter melon fruit extract and edelweiss extract
• Texture: Lightweight serum designed to absorb comfortably into the skin
• Finish: Hydrated, smooth, clear and brighter-looking
• Formula notes: Combines two targeted tone-care actives—5% tranexamic acid and 5% niacinamide—with hyaluronic acid and botanical extracts
• Usage: Apply a small to moderate amount after cleansing and toning and gently pat into the skin until fully absorbed
• Routine placement: Apply after cleansing and toner and before moisturizer; when used during the day, finish with broad-spectrum sunscreen
• Origin: Made in South Korea
• Period after opening: 12 months; COS DE BAHA has confirmed that “6 months” printed on some TN Serum bottles was a label misprint and the correct period is 12 months
• Storage: Keep tightly closed and store away from excessive heat and direct sunlight
• Caution: For external use only. Patch test before regular use, avoid direct contact with the eyes and discontinue use if persistent irritation develops

Core Product Details

5% Tranexamic Acid for a More Even, Luminous Complexion

COS DE BAHA TN Tranexamic Acid 5% Niacinamide 5% Serum turns targeted pigmentation care into a refined South Korean skincare ritual. At its heart lies 5% tranexamic acid, an ingredient selected for routines focused on the visible appearance of hyperpigmentation, discoloration, stubborn dark spots and post-inflammatory marks. Rather than simply illuminating the skin temporarily, TN Serum is designed for consistent tone-focused care, making it a compelling Korean dark spot serum for complexions seeking greater clarity, uniformity and radiance.

5% Tranexamic Acid Meets 5% Niacinamide

The formula's defining allure lies in its dual-active approach. Alongside 5% tranexamic acid is 5% niacinamide, bringing one of K-Beauty's most beloved complexion-refining ingredients into the ritual. Niacinamide supports brighter, more even-looking skin while complementing the formula's focus on visible discoloration. Together, these actives create a sophisticated Korean hyperpigmentation serum designed for skin marked by lingering post-blemish discoloration, uneven tone and areas that appear darker than the surrounding complexion.

Targeted Care for Stubborn Post-Blemish Marks

When a blemish disappears but its visible trace remains, TN Serum offers a focused addition to the skincare ritual. COS DE BAHA specifically positions its tranexamic acid formula for existing pigmentation and post-inflammatory hyperpigmentation, allowing the complexion to gradually appear more harmonious and refined. The approach is patient rather than aggressive: a consistent brightening ritual centered on improving the look of discoloration while preserving the pleasure of beautifully cared-for skin.

Hyaluronic Acid Surrounds Brightening Actives with Hydration

Targeted tone care is accompanied by moisture through sodium hyaluronate, betaine and glycereth-26. These ingredients help support hydration and a supple skin feel, while aloe vera and allantoin contribute conditioning comfort. This balance prevents the sensorial experience from feeling purely corrective. Instead, each application combines concentrated pigmentation care with the fresh, moisture-kissed finish so intimately associated with modern Korean skincare and glass-skin rituals.

Botanical Extracts Complete the Complexion Ritual

Green tea, elderflower, bitter melon and edelweiss extracts complete the supplied and verified ingredient composition, adding botanical and antioxidant character to the formula. Their presence complements rather than overshadows the two hero actives, allowing tranexamic acid and niacinamide to remain at the centre of the experience. The result is a thoughtfully structured serum for those who desire brighter-looking skin without an unnecessarily complicated treatment step.

Daily Brightening Belongs Beside Daily Sun Protection

Apply TN Serum after cleansing and toning, gently patting a small to moderate amount into the complexion before moisturizer. During daytime routines, complete your skincare with broad-spectrum sunscreen. TN Serum itself should not be considered UV protection; when dark spots and uneven tone are concerns, diligent sun protection remains an essential companion to a thoughtfully designed brightening routine.

A Korean Ritual Devoted to the Art of Even-Toned Radiance

Made in South Korea, COS DE BAHA TN Tranexamic Acid 5% Niacinamide 5% Serum embodies the precision of contemporary K-Beauty: concentrated actives chosen with a clear purpose, surrounded by hydration and botanical care. Tranexamic acid and niacinamide turn the daily pursuit of luminosity into something beautifully intentional—a quiet ritual for diminishing the appearance of stubborn discoloration and revealing skin that looks clearer, more harmonious and naturally illuminated.

FAQ

What does COS DE BAHA TN Tranexamic Acid Niacinamide Serum do?

TN Serum is formulated to help improve the visible appearance of hyperpigmentation, discoloration, dark spots and post-inflammatory marks. It combines 5% tranexamic acid with 5% niacinamide for targeted brightening and tone-refining care.

How much tranexamic acid and niacinamide does COS DE BAHA TN Serum contain?

The formula contains 5% tranexamic acid and 5% niacinamide. The uploaded product packaging independently confirms both concentrations, alongside hyaluronic acid.

Can COS DE BAHA TN Serum help with post-acne dark marks?

The serum is specifically positioned for post-inflammatory hyperpigmentation and stubborn discoloration, including marks that can remain visible after blemishes have subsided. Results from cosmetic brightening care vary by individual skin and require consistent use.

Does COS DE BAHA TN Serum replace sunscreen?

No. TN Serum is a brightening skincare treatment and is not a sunscreen. Daily broad-spectrum sun protection remains important, particularly when your routine is focused on preventing visible discoloration from becoming more pronounced.

How long is COS DE BAHA TN Serum good for after opening?

COS DE BAHA confirms a 12-month period after opening. The brand has issued an official notice explaining that some TN Serum bottles were mistakenly printed with a six-month instruction, while the outer box correctly displays the 12M symbol.

Turn the Pursuit of Clarity into Your Radiance Ritual

Let COS DE BAHA TN Tranexamic Acid 5% Niacinamide 5% Serum become the luminous heart of your tone-care ritual. With two concentrated brightening actives embraced by hyaluronic hydration and botanical care, this South Korean serum invites stubborn-looking discoloration to fade into the background while a clearer, smoother and more captivatingly even-looking complexion takes its place.