1 / 7BHA Blackhead Power Liquid
A slow-and-steady chemical exfoliant for blackheads and clogged pores, built around betaine salicylate — a gentler cousin of salicylic acid. It works over weeks rather than days, which makes it a comfortable first BHA for combination and oily skin that finds stronger acids harsh or stinging.
More detail
The active is 4% betaine salicylate, a milder BHA that loosens the oil-and-dead-cell mix inside pores, carried in a base of willow bark water — the plant source salicylates were originally derived from. Niacinamide helps fade the marks blemishes leave behind, while sodium hyaluronate and panthenol keep the formula from feeling stripping; there's no alcohol, fragrance, or essential oil. It's a lightly slippery liquid used after cleansing at the toner or essence step — wiped on with a cotton pad or patted in by hand, avoiding the eye and lip area — and left to absorb before the next layer. Start two or three times a week and build up only as your skin tolerates it. Don't stack it with other acids, retinoids, or strong vitamin C in the same session, and wear sunscreen daily while any exfoliating acid is in your routine. As with any salicylate product, check with a doctor before using it while pregnant or breastfeeding.
Ingredient check⚠ 1 caution flag
Evidence checkGrade A · MFDS ✓
How grading works
What Korea says#9 serum
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Where to buybest total $17.50
| Retailer | Price | Ship + duty | Total | |
|---|---|---|---|---|
| Amazon ✓ official Official store — verify seller before launch Accepts: Visa · MC · Amex · Discover · Amazon Pay · Affirm | $25 | — | $25 | Shop → |
| Olive Young Global ✓ official Ships from Korea 7–14d · +15% duty Accepts: Cards · PayPal · Apple Pay · Alipay+ | $20 | $10.00 | $30 | Shop → |
| COSRX official ✓ officialSALE −30% Live store price · Brand's own US store Accepts: Cards · PayPal (varies) | $17.5 | — | $17.50BEST | Shop → |
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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