COSRX AHA 7 Whitehead Power Liquid — image 11 / 7
COSRX · Serum

AHA 7 Whitehead Power Liquid

Korea ranking #23 serumUS stock

A leave-on liquid exfoliant with 7% glycolic acid, made for clogged pores, whiteheads, and rough texture. It's a watery, toner-like liquid you sweep on with a cotton pad — no scrubbing involved. Best for oily or congestion-prone skin that's already comfortable with acids; beginners should ease in slowly.

More detail

Glycolic acid at 7% loosens the bonds holding dead cells to the surface, which is what gradually clears whiteheads and smooths texture; niacinamide helps fade the marks blemishes leave behind, while sodium hyaluronate and panthenol cushion the formula with hydration. It's a clear, watery liquid that absorbs without stickiness. In the evening after cleansing, sweep a thin layer over the face with a cotton pad, avoiding the eye and mouth areas — start two to three times a week and increase only if your skin stays calm. Don't layer it with other exfoliating acids, retinoids, or strong vitamin C in the same routine. A brief mild tingle on application is common, but persistent stinging means rinse it off and scale back. Daily broad-spectrum SPF is essential while using glycolic acid, since AHAs make skin more sun-sensitive.

4.45,100 reviews
AEvidence grade
$25Best total · duties in
lightTexture · Serum
For: Oily · Combination · NormalAll tonesTextureDullness
Is this right for your skin? take the 60-second quiz and this box becomes a personal verdict.
Skin fit ×45%
Evidence ×35%97
Practicality ×20%50
Ingredient check⚠ 1 caution flag
Fragrance-free Fungal-acne safe No drying alcohol Essential-oil free No pregnancy-caution actives
AHA (glycolic/lactic)Surface exfoliation for glow and texture
Evidence checkGrade A · MFDS ✓
🇰🇷 MFDS-certified functional cosmetic brightening (미백)Filed with Korea's FDA as 「코스알엑스아하7화이트헤드파워리퀴드」 — a regulator-reviewed efficacy claim, not a marketing one.
Grade ADisclosed formula and multi-year consistent cross-platform ratings (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#23 serum
#23 serum · Korea ranking · Rank indicative — weekly verification pending
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Where to buybest total $25
RetailerPriceShip + dutyTotal
Amazon ✓ official
Official store — verify seller before launch
Accepts: Visa · MC · Amex · Discover · Amazon Pay · Affirm
$25$25BESTShop →
Olive Young Global ✓ official
Ships from Korea 7–14d · +15% duty
Accepts: Cards · PayPal · Apple Pay · Alipay+
$20$10.00$30Shop →

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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