COSRX BHA Blackhead Power Liquid — Efficacy 3.7/5.0, Safety 4.8/5.0 | DemythSkin
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[ DemythSkin Verdict ]
COSRX BHA Blackhead Power Liquid

COSRX BHA Blackhead Power Liquid

ExfoliantPore Care
Efficacy
Basic
3.7 / 5.0
Safety
Excellent
4.8 / 5.0
System Verdict
A gentle, competent BHA toner—but not a powerhouse blackhead eraser. The efficacy score is held to 3.7 because the formula has a real exfoliant (betaine salicylate) plus helpful support ingredients like niacinamide and panthenol, but the overall formula is light, the BHA is a milder salicylate derivative rather than straight salicylic acid, and the ingredient list gives no evidence of a clearly aggressive or optimized acid system for rapid comedone clearing.
Active Ingredients Detected
A Tier: Good BasicsProven Results
WaterBetaine SalicylateNiacinamideArgininePanthenolSodium Hyaluronate
B Tier: Supporting IngredientsPromising Ingredients
Butylene Glycol1,2-HexanediolXanthan GumEthyl Hexanediol
What Each Ingredient Does
Water
Solvent, formula base
Butylene Glycol
Humectant, solvent
Betaine Salicylate
BHA exfoliant, pore unclogging
Niacinamide
Barrier support, oil control
1,2-Hexanediol
Humectant, preservative booster
Arginine
pH adjuster, skin conditioning
Panthenol
Soothing humectant, barrier support
Sodium Hyaluronate
Hydrating humectant
Xanthan Gum
Thickener, stabilizer
Ethyl Hexanediol
Solvent, preservative booster
Full Ingredient List (INCI)

Water, Butylene Glycol, Betaine Salicylate, Niacinamide, 1,2-hexanediol, Arginine, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol.

Frequently Asked

Is COSRX BHA Blackhead Power Liquid worth it?

COSRX BHA Blackhead Power Liquid scores 3.7 out of 5.0 for efficacy (Basic) and 4.8 out of 5.0 for safety (Excellent) on DemythSkin's independent ingredient analysis. A gentle, competent BHA toner—but not a powerhouse blackhead eraser. The efficacy score is held to 3.7 because the formula has a real exfoliant (betaine salicylate) plus helpful support ingredients like niacinamide and p

What are the key active ingredients in COSRX BHA Blackhead Power Liquid?

COSRX BHA Blackhead Power Liquid contains no gold-standard actives — its formula is built on supporting and base ingredients rather than clinically transformative actives.

Does COSRX BHA Blackhead Power Liquid contain fragrance or known irritants?

DemythSkin's analysis found no flagged irritants in COSRX BHA Blackhead Power Liquid. It scores 4.8 out of 5.0 for safety.

How is COSRX BHA Blackhead Power Liquid scored?

DemythSkin grades every product on two independent axes: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are classified S through D against a database of over 3,000 compounds. No brand pays for a score.

Analyze on DemythSkin →

Analysis last updated: 2026-05-15. DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.