Cos De BAHA Niacinamide 20% Serum
Cos De BAHA · Serum

Niacinamide 20% Serum

Korea ranking #48 serumUS stock

A high-strength niacinamide serum paired with zinc, aimed at oily and blemish-prone skin that wants a more even, less shiny complexion. It is a plain, no-frills formula: alcohol-free, fragrance-free, and light enough to sit under the rest of your routine. A good fit for anyone working on dark spots, the look of pores, or midday shine.

More detail

The core actives are 20% niacinamide, which helps brighten, even out tone, support the skin barrier and keep oil in check, plus 4% zinc PCA that calms excess sebum and suits breakout-prone skin. Arbutin adds extra help fading dark spots, while glycerin, sodium hyaluronate, aloe and green tea keep things hydrated and soothed. The texture is a lightweight, quick-absorbing liquid you apply after cleansing, morning and/or night, before your moisturizer. Because 20% is a high concentration of niacinamide, introduce it slowly and patch test first, since very sensitive skin can occasionally flush or tingle. It layers cleanly under sunscreen and other products without pilling.

4.33,100 reviews
BEvidence grade
$15Best total · duties in
lightTexture · Serum
For: Oily · Combination · NormalAll tonesPores & OilDark spots (PIH)
Is this right for your skin? take the 60-second quiz and this box becomes a personal verdict.
Skin fit ×45%
Evidence ×35%72
Practicality ×20%50
Ingredient check✓ all clear
Fragrance-free Fungal-acne safe No drying alcohol Essential-oil free No pregnancy-caution actives
NiacinamideMultitasker: fades dark spots & PIH, regulates oil, strengthens barrierZinc PCASebum-regulating mineral salt
Evidence checkGrade B
Grade BSolid transparency and consistent ratings; limited third-party clinical data (seed draft — verify before launch).
How grading works
Scored on clinicals · certifications · cross-platform rating consistency · transparency. Brands can't pay to change this.
What Korea says#48 serum
#48 serum · Korea ranking · Rank indicative — weekly verification pending
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Where to buybest total $15
RetailerPriceShip + dutyTotal
Amazon ✓ official
Official store — verify seller before launch
Accepts: Visa · MC · Amex · Discover · Amazon Pay · Affirm
$15$15BESTShop →
Olive Young Global ✓ official
Ships from Korea 7–14d · +15% duty
Accepts: Cards · PayPal · Apple Pay · Alipay+
$12$8.80$20.80Shop →

Totals include estimated import duty on Korea-shipped orders (15%, post–de minimis). Links open retailer search; exact product links are coming at launch. Payment methods indicative — verify at checkout.

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