ProtoClinical k-beauty Cos De BAHA TN Tranexamic Acid 5% Serum with Niacinamide 5% 30ml purple serum bottle with matching box side by side on a white background
ProtoClinical k-beauty Cos De BAHA TN Tranexamic Acid 5% Serum with Niacinamide 5% 30ml purple serum bottle with matching box side by side on a white background
ProtoClinical k-beauty Cos De BAHA TN Tranexamic Acid 5% Serum with Niacinamide 5% 30ml single upright purple serum bottle centered on a white background
Cos De BAHA

Cos De BAHA TN Tranexamic Acid 5% Serum with Niacinamide 5% 30ml

$13.10
Fades post-acne marks Evens dark spots Soothes stressed skin Hydrates lightly Brightens dull tone
Troubled by dark spots and acne scars? This potent serum comes infused with the powerful duo of tranexamic acid and niacinamide to fade hyperpigmentation and dark spots. Green tea in the formula soothes and protects skin, while aloe leaf extract and sodium hyaluronate keep skin hydrated. Free of...
The same balanced tranexamic-niacinamide tone care in a compact size.
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Sensitive Skin Friendly Dark Spot Care Daily Tone Correction
tranexamic acid niacinamide green tea sodium hyaluronate
Cos De BAHA TN Tranexamic Acid 5% Serum with Niacinamide 5% 30ml
Cos De BAHA TN Tranexamic Acid 5% Serum with Niacinamide 5% 30ml Default Title
$13.10
Clinically proven actives Dermatologist tested 100% authentic Korean Cruelty-free
Pairs beautifully with

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$13.10

tranexamic acid, niacinamide, green tea, and sodium hyaluronate

Niacinamide works at the junction between melanocytes and keratinocytes, intercepting melanin transfer before pigment reaches the visible surface. It simultaneously boosts ceramide synthesis to strengthen the lipid barrier, which is why consistent use addresses both discoloration and dehydration. In this serum, Niacinamide targets sensitivity and redness, delivering visibly brightens skin tone and fades uneven patches with consistent use.

Niacinamide 5%
intercepts melanin transfer to fade spots and refine pore texture from within
Green Tea Extract
delivers epigallocatechin gallate (EGCG), one of the most potent natural antioxidants known
Aloe Vera
delivers instant soothing hydration with natural anti-inflammatory compounds
Tranexamic Acid 5%
blocks melanin transfer to fade stubborn dark spots that resist other treatments
The texture

Lightweight, absorbing Spot-fading duo

Troubled by dark spots and acne scars? This potent serum comes infused with the powerful duo of tranexamic acid and niacinamide to fade hyperpigmentation and dark spots. Green tea in the formula soothes and protects skin, while aloe leaf extract and sodium hyaluronate keep skin hydrated. Free of potentially irritating ingredients like sulfates and mineral oils, this product is suitable for sensitive skin.

  • A serum that effectively combats hyperpigmentation.
  • Tranexamic acid is one of the most popular ingredients on the market for skin brightening.
  • Prevents post-inflammatory hyperpigmentation.
  • Decreases the skin’s sensitivity to UV rays.
  • Free of 8 harmful ingredients, such as sulfates and mineral oils.
  • Helps fade stubborn acne marks.
Sensitive Skin dark spots post-acne marks uneven tone dehydration
Hover the swatch: it ripples like water

How to use

1

After toner, apply 2-3 drops over the face.

2

Press more product into uneven areas.

3

Follow with moisturizer.

4

Use sunscreen during the daytime.

5

Use morning and night as needed.

Full transparency

Ingredients

Tranexamic acid and niacinamide target discoloration while green tea, aloe, and sodium hyaluronate keep skin calm.

This formula is built around 5% tranexamic acid and 5% niacinamide. In cosmetic skin care, that kind of combination is commonly used for visible tone correction because tranexamic acid is widely used in cosmetic brightening care to help reduce the look of persistent discoloration, while niacinamide supports a more even overall tone and post-blemish clarity. It also helps with dark spots, acne marks, and the unevenness that lingers after inflammation has gone down, which matters when dullness and discoloration show up together. Green tea, aloe leaf extract, and sodium hyaluronate add antioxidant, soothing, and moisture support so the serum can stay comfortable enough for regular use. That support matters because brightening formulas perform best when skin stays comfortable instead of feeling tight or overworked. When hydration and barrier comfort are maintained, skin usually reflects light better and looks clearer overall. That is why this type of formula makes sense for daily use: it addresses uneven tone while also improving the feel and finish of the skin surface. In a smaller size, the formula still serves the same practical purpose: dependable daily tone care with enough hydration and comfort to encourage consistency.

The detail

Specs & details

FormatLightweight serum
SizeDefault Title
Skin typesSensitive Skin
Country of originSouth Korea
Before you add to cart

Questions & answers

After cleansing and toning, before moisturizer. Serums deliver actives most effectively on freshly prepped skin.
Yes. Apply from thinnest to thickest consistency and allow each layer to absorb before the next.
Most users notice initial improvement within 2 to 4 weeks. For full benefits like visibly brightens skin tone and fades uneven patches, allow 6 to 8 weeks of consistent use.
Your skin begins adjusting. You may notice improved hydration and comfort before more visible changes like texture refinement become apparent.
Yes, this formula is developed to be compatible with sensitive skin dealing with sensitivity and redness. If you have very reactive skin, patch test on the inner arm before full application.
The formula is designed to be well-tolerated. For pregnancy-specific concerns, consult your healthcare provider. For sensitive skin, patch test before full application.
Niacinamide intercepts melanin transfer to fade spots and refine pore texture from within. Consistent daily use is key to seeing the full benefits.
Check the INCI list for the most accurate information on fragrance components. The formula is developed for minimal irritation potential.
Store in a cool, dry place away from direct sunlight. Use within 12 months of opening for optimal freshness and efficacy.
Serums have a higher concentration of targeted actives than essences and a lighter consistency than most ampoules. They deliver the most potent treatment in your routine.
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About the brand

OriginSeoul, KR
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