Product overview
Cosrx BHA Blackhead Power Liquid (50ml) is a leave-on BHA exfoliating toner from the Korean skincare brand COSRX, targeted at blackheads and pore congestion. This 50ml size is a "Mini" version of COSRX's primary 100ml product.
Key Ingredients
- Betaine Salicylate -- the BHA active in this formula. Important distinction: this is NOT the same as standard Salicylic Acid -- it is a gentler, water-soluble derivative; per ingredient-database analysis, a roughly 4% Betaine Salicylate formulation is comparable in effect to a roughly 2% Salicylic Acid product
- Niacinamide -- supports an even-looking skin tone alongside the exfoliating action
- Salix Alba (Willow) Bark Water, Panthenol, Sodium Hyaluronate, and Arginine -- soothing and hydrating ingredients that help offset the exfoliating effect, per the current official ingredient list
- Also contains Butylene Glycol, 1,2-Hexanediol, Xanthan Gum, and Ethyl Hexanediol, per the current official ingredient list
Sourcing note -- formula conflict: an older ingredient-database listing (likely reflecting a past reformulation) includes Betaine and Sodium Hydroxide, which do not appear on the current official cosrx.com ingredient list; the current official list instead includes Arginine, which does not appear on that older listing. Per source priority, the current official cosrx.com list is used here as authoritative, and this historical discrepancy is disclosed rather than silently resolved. No specific concentration or pH is disclosed for the current formula by either source -- the "4%" figure sometimes associated with this product appears to relate to a discontinued/historical version, and is not claimed here for the current formula.
Key Features
- 50ml "Mini" size of COSRX's BHA Blackhead Power Liquid, alongside a primary 100ml size
- Sourcing note: the 50ml Mini's ingredient match to the 100ml formula is a reasonable industry-standard assumption (same formula, smaller fill), but has not been independently verified specifically for the 50ml SKU
- Alcohol-free formula
Benefits
- Helps exfoliate and clear congested pores, targeting blackheads and rough texture
- Niacinamide content supports an even-looking tone alongside the exfoliating benefit
Who Can Use This Product
- Those with blackhead-prone or congested skin looking for a gentle, water-soluble BHA exfoliant
- Not recommended for pregnant or breastfeeding individuals, per the official brand site
- Best suited to those already experienced with chemical exfoliants -- start with 2-3 uses per week and increase gradually based on tolerance
- Avoid combining with other exfoliating acids (AHA/BHA), retinoids, or Vitamin C in the same routine
How to Use
Apply after cleansing, at the toner/essence step of a routine. Let it fully absorb before applying the next product. Start with 2-3 uses per week and increase gradually based on skin tolerance. Use sunscreen during the day, as exfoliating acids can increase sun sensitivity.
Storage & Safety
Store in a cool, dry place away from direct sunlight and heat. Avoid contact with the eyes; rinse thoroughly with water if contact occurs. Introduce gradually to reduce the risk of initial irritation in sensitive skin. Discontinue use if irritation persists. Keep out of reach of children.
Frequently Asked Questions (FAQ)
Is this the same as Salicylic Acid?
No, this formula uses Betaine Salicylate, a gentler, water-soluble derivative -- roughly comparable in effect to Salicylic Acid at about half the concentration, per ingredient-database analysis.
Why do different sources list different ingredients for this product?
An older ingredient-database listing includes Betaine and Sodium Hydroxide, which are absent from the current official COSRX list; this likely reflects a past reformulation. The current official list (which includes Arginine instead) is used as the authoritative source here.
Is the 50ml Mini the same formula as the 100ml?
This is a reasonable industry-standard assumption but has not been independently verified specifically for the 50ml size.
Can this be used with other actives like Retinol or Vitamin C?
This is not recommended in the same routine -- avoid combining with other exfoliating acids, retinoids, or Vitamin C.
How often should I use this?
Start with 2-3 times per week and increase gradually based on tolerance.
The information provided is accurate to our best practices, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy. The absence of specific information about a drug should not be seen as an endorsement. We are not responsible for any consequences resulting from this information, so consult a healthcare professional for any concerns or questions.
