BHA Blackhead Power Liquid
A gentle yet effective chemical exfoliant featuring 4% Betaine Salicylate (BHA) and 68% Willow Bark Water to unclog pores, reduce blackheads, and reveal smoother, clearer skin. Formulated with Niacinamide to brighten and even skin tone without irritation.
โจ Texture & Feel
Deep Pore Cleansing
Oil-soluble BHA penetrates into pores to dissolve sebum, dead skin cells, and blackheads from within.
Gentle Exfoliation
Betaine Salicylate is milder than pure salicylic acid, making it suitable for daily use without irritation.
Brightening Effect
2% Niacinamide helps fade dark spots, reduce post-acne marks, and improve overall skin radiance.
Hydrating Base
Contains Sodium Hyaluronate, Panthenol, and Arginine to maintain hydration while exfoliating.
๐ก๏ธ Safety & Compatibility
Not recommended. Contains BHA (salicylic acid derivative) which should be avoided during pregnancy and breastfeeding per COSRX guidelines.
Free from fatty acids, oils, esters, polysorbates, and fermented ingredients that feed malassezia yeast.
Rated 1/5. Minimal pore-clogging ingredients. Butylene Glycol scores only 1 on CosDNA.
BHA can increase sun sensitivity. Always apply SPF 30+ sunscreen during the day when using this product.
New to chemical exfoliants? Start with 2-3 times per week and gradually increase usage as tolerated.
Do not use simultaneously with other acids (AHA, BHA), retinol, or Vitamin C. Alternate days instead.
๐ฌ Ingredient Breakdown
๐ฟ Betaine Salicylate 4% Proven
A gentler derivative of salicylic acid combined with betaine (a natural moisturizer). Oil-soluble to penetrate pores and dissolve sebum, dead skin cells, and blackheads while providing mild hydration.
- Mechanism: Exfoliates inside pores due to oil-solubility (unlike water-soluble AHAs)
- Equivalency: 4% Betaine Salicylate โ 2% pure Salicylic Acid in effectiveness
- pH Optimal: Most effective at pH 3.8-4.2 (this product: pH 4.0-4.5)
๐ณ Salix Alba (Willow) Bark Water 68% Proven
The base of this formula is willow bark water instead of plain water. Willow bark is a natural source of salicin, which has anti-inflammatory and soothing properties.
- Source: Natural precursor to salicylic acid with centuries of traditional use
- Benefit: Provides anti-inflammatory support to reduce redness and irritation
- Synergy: Complements the Betaine Salicylate for enhanced efficacy
โจ Niacinamide (Vitamin B3) 2% Proven
A multi-functional active that brightens skin, reduces dark spots, strengthens the skin barrier, and helps regulate sebum production.
- Research: Clinically proven to reduce hyperpigmentation and improve skin tone
- Sebum Control: Helps regulate oil production in oily/combination skin
- Barrier Support: Strengthens skin barrier and reduces transepidermal water loss
๐ง Sodium Hyaluronate 0.35-0.8% Proven
A smaller molecular weight form of hyaluronic acid that penetrates deeper into skin layers to provide lasting hydration.
- Function: Humectant that attracts and holds up to 1000x its weight in water
- Benefit: Counteracts potential drying effects of BHA exfoliation
๐งด Panthenol (Vitamin B5) 0.3-0.7% Proven
A soothing and hydrating ingredient that supports skin healing and maintains moisture levels.
- Function: Humectant and skin-conditioning agent
- Benefit: Calms irritation and supports wound healing
10 ingredients
Salix Alba (Willow) Bark Water, Butylene Glycol, Betaine Salicylate, Niacinamide, 1,2-Hexanediol, Arginine, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol
๐ Where It Fits in Your Routine
Use 2-3 times per week initially, gradually increasing to daily use if tolerated. Best used in evening routine.
๐ How to Use
Cleanse Your Face
Start with a clean, dry face. Double cleanse if wearing makeup or sunscreen.
Apply the BHA Liquid
Pump 2-3 drops onto a cotton pad or fingertips. Gently swipe or pat across face, avoiding eye and lip area.
Wait for Absorption
Allow 20-30 minutes for the product to fully absorb and work before applying next steps (optional but recommended for maximum efficacy).
Continue Your Routine
Follow with hydrating serum, moisturizer, and sunscreen (AM). Keep routine simple when using actives.
๐ค Who Is It For?
โ Perfect for you if:
- You struggle with blackheads, clogged pores, or sebaceous filaments
- You have oily, combination, or acne-prone skin
- You want a gentle introduction to chemical exfoliation
- You prefer minimal, no-fuss ingredient lists
- You need a fungal acne-safe exfoliant
- You want to improve skin texture and reduce closed comedones
โ Consider alternatives if:
- You are pregnant or breastfeeding (avoid all BHAs)
- You have very dry or dehydrated skin (may need stronger hydration)
- You need a stronger BHA for stubborn acne (try 2% salicylic acid)
- You have an aspirin allergy (salicylic acid is related to aspirin)
- You are already using multiple active products (retinol, AHA, etc.)
๐ฏ Skin Type Compatibility
Perfect match. Controls excess sebum, clears clogged pores, and reduces shine without over-drying.
Ideal for T-zone concerns. Targets oily areas while the hydrating base protects drier zones.
BHA's antibacterial and anti-inflammatory properties help prevent and treat breakouts. Fungal acne safe.
Gentler than most BHAs due to Betaine Salicylate. Start slowly (1-2x/week) and patch test first.
May be slightly drying. Use sparingly (1-2x/week) and follow with rich moisturizer. Consider AHA instead.
Great for maintenance and prevention. Keeps pores clear and skin smooth with regular use.
๐ Results Timeline
Initial Adjustment
Skin may feel slightly smoother. Some users experience mild purging as clogged pores surface. Tingling sensation is normal.
40% notice smoother textureVisible Improvements
Noticeable reduction in blackheads and sebaceous filaments. Pores appear cleaner and less congested. Skin has a natural glow.
70% see reduced blackheadsSignificant Results
Clearer, smoother skin texture. Fewer breakouts and clogged pores. Improved skin tone from niacinamide. Pores appear minimized.
85% report clearer skinLong-Term Benefits
Maintained clear pores with consistent use. Many users report this becomes a skincare staple they repurchase repeatedly.
90% continue repurchasingโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Gentle enough for sensitive and beginner acid users
- Minimal, effective ingredient list (only 10 ingredients)
- Fungal acne safe formula
- Excellent value for money (100ml lasts 4-6 months)
- Visibly reduces blackheads and clogged pores
- Improves skin texture and adds glow
- Fragrance-free and cruelty-free
- Contains bonus niacinamide for brightening
โ Criticized
- May be too gentle for severe acne (4% is mild)
- Slightly tacky/sticky finish on some skin types
- Faint citrus scent may bother some users
- Pump dispenser not travel-friendly (can leak)
- Results take 2-4 weeks to become visible
- Not suitable for pregnancy/breastfeeding
- pH slightly higher than optimal (4.0-4.5 vs ideal 3.8-4.0)
๐ฐ Budget-Friendly Alternatives (Dupes)
2% pure salicylic acid pads. Stronger and more effective for stubborn acne, but contains menthol which may irritate sensitive skin. 55-90 pads per container.
Pure 2% salicylic acid in a simple formula. More potent than COSRX but smaller bottle (30ml). No niacinamide or willow bark water.
2% salicylic acid with zinc. Similar gentle approach. Smaller bottle (30ml) but contains zinc for additional oil control.
๐ Comparison with Competitors
COSRX BHA Blackhead Power Liquid
$18-26Paula's Choice 2% BHA Liquid
$35The Ordinary Salicylic Acid 2%
$7.90Stridex Maximum Red Box
$5.50๐ฆ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required.
Opaque plastic bottle with pump dispenser. Pump has cap for protection.
Yes, 100ml is under TSA liquid limit. Secure pump cap tightly to prevent leaking.
โ Frequently Asked Questions
No, this product is NOT recommended during pregnancy or breastfeeding. COSRX officially advises avoiding AHAs and BHAs during pregnancy and breastfeeding. Salicylic acid (and its derivatives like Betaine Salicylate) can potentially be absorbed through the skin. Consult your healthcare provider for pregnancy-safe alternatives.
Yes! This product is fungal acne safe. It does not contain fatty acids, oils, esters, polysorbates, or fermented ingredients that feed malassezia yeast. It's actually recommended by skincare experts for those dealing with fungal acne as BHA helps control excess sebum that fungi thrive on.
It's best to avoid using these actives together in the same routine to prevent irritation and over-exfoliation. Alternate usage: use BHA on one evening, retinol or vitamin C on another. Wait 20-30 minutes after BHA application before applying other actives if you must layer. Never combine BHA with AHA in the same routine unless your skin is very tolerant.
This product is best suited for oily, combination, and acne-prone skin types. It's excellent for those dealing with blackheads, clogged pores, and sebaceous filaments. Due to its gentle formulation with Betaine Salicylate (milder than pure salicylic acid), it's also suitable for sensitive skin with proper introduction. Dry skin types may find it slightly drying and should use sparingly with extra moisturizer.
Most users notice smoother skin texture within 1-2 weeks. Visible reduction in blackheads and clogged pores typically occurs at 2-4 weeks of consistent use. Significant improvement in overall skin clarity is usually seen at 4-8 weeks. Results depend on your skin condition, consistency of use, and whether you're using it correctly (2-3x weekly to start, then daily if tolerated).
Apply after cleansing, on clean dry skin. Use before toner, essence, serum, and moisturizer. The order is: Cleanser โ BHA Liquid (wait 20-30 min for maximum efficacy, optional) โ Toner โ Serum โ Moisturizer โ Sunscreen (AM only). Always apply sunscreen in the morning as BHA can increase sun sensitivity.
No, this product has a very low comedogenic rating of 1/5. The only ingredient with any potential pore-clogging concern is Butylene Glycol, which scores only 1 on CosDNA. The formula is specifically designed to unclog pores, not clog them. It's free from oils, silicones, and heavy emollients that typically cause congestion.
The product has a PAO (Period After Opening) of 12 months. The 100ml bottle typically lasts 4-6 months with regular use (2-3 pumps, 3x weekly). Store in a cool, dry place away from direct sunlight to maintain potency. If the product changes color, smell, or texture significantly, discontinue use.
Verdict: COSRX BHA Blackhead Power Liquid is an excellent entry-level BHA that delivers on its promises with a clean, minimal formula. The 4% Betaine Salicylate is gentler than traditional salicylic acid, making it ideal for sensitive skin or BHA beginners. While it may not be potent enough for severe acne, it excels at maintaining clear pores, reducing blackheads, and improving overall skin texture. The addition of niacinamide and hyaluronic acid makes it more than just an exfoliant. At its price point (especially when purchased from Asian retailers), it offers exceptional value for a product that lasts months. A true K-beauty cult classic that has earned its reputation through years of consistent results.
Original: $213.90
-70%$213.90
$64.17BHA Blackhead Power Liquid
A gentle yet effective chemical exfoliant featuring 4% Betaine Salicylate (BHA) and 68% Willow Bark Water to unclog pores, reduce blackheads, and reveal smoother, clearer skin. Formulated with Niacinamide to brighten and even skin tone without irritation.
โจ Texture & Feel
Deep Pore Cleansing
Oil-soluble BHA penetrates into pores to dissolve sebum, dead skin cells, and blackheads from within.
Gentle Exfoliation
Betaine Salicylate is milder than pure salicylic acid, making it suitable for daily use without irritation.
Brightening Effect
2% Niacinamide helps fade dark spots, reduce post-acne marks, and improve overall skin radiance.
Hydrating Base
Contains Sodium Hyaluronate, Panthenol, and Arginine to maintain hydration while exfoliating.
๐ก๏ธ Safety & Compatibility
Not recommended. Contains BHA (salicylic acid derivative) which should be avoided during pregnancy and breastfeeding per COSRX guidelines.
Free from fatty acids, oils, esters, polysorbates, and fermented ingredients that feed malassezia yeast.
Rated 1/5. Minimal pore-clogging ingredients. Butylene Glycol scores only 1 on CosDNA.
BHA can increase sun sensitivity. Always apply SPF 30+ sunscreen during the day when using this product.
New to chemical exfoliants? Start with 2-3 times per week and gradually increase usage as tolerated.
Do not use simultaneously with other acids (AHA, BHA), retinol, or Vitamin C. Alternate days instead.
๐ฌ Ingredient Breakdown
๐ฟ Betaine Salicylate 4% Proven
A gentler derivative of salicylic acid combined with betaine (a natural moisturizer). Oil-soluble to penetrate pores and dissolve sebum, dead skin cells, and blackheads while providing mild hydration.
- Mechanism: Exfoliates inside pores due to oil-solubility (unlike water-soluble AHAs)
- Equivalency: 4% Betaine Salicylate โ 2% pure Salicylic Acid in effectiveness
- pH Optimal: Most effective at pH 3.8-4.2 (this product: pH 4.0-4.5)
๐ณ Salix Alba (Willow) Bark Water 68% Proven
The base of this formula is willow bark water instead of plain water. Willow bark is a natural source of salicin, which has anti-inflammatory and soothing properties.
- Source: Natural precursor to salicylic acid with centuries of traditional use
- Benefit: Provides anti-inflammatory support to reduce redness and irritation
- Synergy: Complements the Betaine Salicylate for enhanced efficacy
โจ Niacinamide (Vitamin B3) 2% Proven
A multi-functional active that brightens skin, reduces dark spots, strengthens the skin barrier, and helps regulate sebum production.
- Research: Clinically proven to reduce hyperpigmentation and improve skin tone
- Sebum Control: Helps regulate oil production in oily/combination skin
- Barrier Support: Strengthens skin barrier and reduces transepidermal water loss
๐ง Sodium Hyaluronate 0.35-0.8% Proven
A smaller molecular weight form of hyaluronic acid that penetrates deeper into skin layers to provide lasting hydration.
- Function: Humectant that attracts and holds up to 1000x its weight in water
- Benefit: Counteracts potential drying effects of BHA exfoliation
๐งด Panthenol (Vitamin B5) 0.3-0.7% Proven
A soothing and hydrating ingredient that supports skin healing and maintains moisture levels.
- Function: Humectant and skin-conditioning agent
- Benefit: Calms irritation and supports wound healing
10 ingredients
Salix Alba (Willow) Bark Water, Butylene Glycol, Betaine Salicylate, Niacinamide, 1,2-Hexanediol, Arginine, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol
๐ Where It Fits in Your Routine
Use 2-3 times per week initially, gradually increasing to daily use if tolerated. Best used in evening routine.
๐ How to Use
Cleanse Your Face
Start with a clean, dry face. Double cleanse if wearing makeup or sunscreen.
Apply the BHA Liquid
Pump 2-3 drops onto a cotton pad or fingertips. Gently swipe or pat across face, avoiding eye and lip area.
Wait for Absorption
Allow 20-30 minutes for the product to fully absorb and work before applying next steps (optional but recommended for maximum efficacy).
Continue Your Routine
Follow with hydrating serum, moisturizer, and sunscreen (AM). Keep routine simple when using actives.
๐ค Who Is It For?
โ Perfect for you if:
- You struggle with blackheads, clogged pores, or sebaceous filaments
- You have oily, combination, or acne-prone skin
- You want a gentle introduction to chemical exfoliation
- You prefer minimal, no-fuss ingredient lists
- You need a fungal acne-safe exfoliant
- You want to improve skin texture and reduce closed comedones
โ Consider alternatives if:
- You are pregnant or breastfeeding (avoid all BHAs)
- You have very dry or dehydrated skin (may need stronger hydration)
- You need a stronger BHA for stubborn acne (try 2% salicylic acid)
- You have an aspirin allergy (salicylic acid is related to aspirin)
- You are already using multiple active products (retinol, AHA, etc.)
๐ฏ Skin Type Compatibility
Perfect match. Controls excess sebum, clears clogged pores, and reduces shine without over-drying.
Ideal for T-zone concerns. Targets oily areas while the hydrating base protects drier zones.
BHA's antibacterial and anti-inflammatory properties help prevent and treat breakouts. Fungal acne safe.
Gentler than most BHAs due to Betaine Salicylate. Start slowly (1-2x/week) and patch test first.
May be slightly drying. Use sparingly (1-2x/week) and follow with rich moisturizer. Consider AHA instead.
Great for maintenance and prevention. Keeps pores clear and skin smooth with regular use.
๐ Results Timeline
Initial Adjustment
Skin may feel slightly smoother. Some users experience mild purging as clogged pores surface. Tingling sensation is normal.
40% notice smoother textureVisible Improvements
Noticeable reduction in blackheads and sebaceous filaments. Pores appear cleaner and less congested. Skin has a natural glow.
70% see reduced blackheadsSignificant Results
Clearer, smoother skin texture. Fewer breakouts and clogged pores. Improved skin tone from niacinamide. Pores appear minimized.
85% report clearer skinLong-Term Benefits
Maintained clear pores with consistent use. Many users report this becomes a skincare staple they repurchase repeatedly.
90% continue repurchasingโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Gentle enough for sensitive and beginner acid users
- Minimal, effective ingredient list (only 10 ingredients)
- Fungal acne safe formula
- Excellent value for money (100ml lasts 4-6 months)
- Visibly reduces blackheads and clogged pores
- Improves skin texture and adds glow
- Fragrance-free and cruelty-free
- Contains bonus niacinamide for brightening
โ Criticized
- May be too gentle for severe acne (4% is mild)
- Slightly tacky/sticky finish on some skin types
- Faint citrus scent may bother some users
- Pump dispenser not travel-friendly (can leak)
- Results take 2-4 weeks to become visible
- Not suitable for pregnancy/breastfeeding
- pH slightly higher than optimal (4.0-4.5 vs ideal 3.8-4.0)
๐ฐ Budget-Friendly Alternatives (Dupes)
2% pure salicylic acid pads. Stronger and more effective for stubborn acne, but contains menthol which may irritate sensitive skin. 55-90 pads per container.
Pure 2% salicylic acid in a simple formula. More potent than COSRX but smaller bottle (30ml). No niacinamide or willow bark water.
2% salicylic acid with zinc. Similar gentle approach. Smaller bottle (30ml) but contains zinc for additional oil control.
๐ Comparison with Competitors
COSRX BHA Blackhead Power Liquid
$18-26Paula's Choice 2% BHA Liquid
$35The Ordinary Salicylic Acid 2%
$7.90Stridex Maximum Red Box
$5.50๐ฆ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required.
Opaque plastic bottle with pump dispenser. Pump has cap for protection.
Yes, 100ml is under TSA liquid limit. Secure pump cap tightly to prevent leaking.
โ Frequently Asked Questions
No, this product is NOT recommended during pregnancy or breastfeeding. COSRX officially advises avoiding AHAs and BHAs during pregnancy and breastfeeding. Salicylic acid (and its derivatives like Betaine Salicylate) can potentially be absorbed through the skin. Consult your healthcare provider for pregnancy-safe alternatives.
Yes! This product is fungal acne safe. It does not contain fatty acids, oils, esters, polysorbates, or fermented ingredients that feed malassezia yeast. It's actually recommended by skincare experts for those dealing with fungal acne as BHA helps control excess sebum that fungi thrive on.
It's best to avoid using these actives together in the same routine to prevent irritation and over-exfoliation. Alternate usage: use BHA on one evening, retinol or vitamin C on another. Wait 20-30 minutes after BHA application before applying other actives if you must layer. Never combine BHA with AHA in the same routine unless your skin is very tolerant.
This product is best suited for oily, combination, and acne-prone skin types. It's excellent for those dealing with blackheads, clogged pores, and sebaceous filaments. Due to its gentle formulation with Betaine Salicylate (milder than pure salicylic acid), it's also suitable for sensitive skin with proper introduction. Dry skin types may find it slightly drying and should use sparingly with extra moisturizer.
Most users notice smoother skin texture within 1-2 weeks. Visible reduction in blackheads and clogged pores typically occurs at 2-4 weeks of consistent use. Significant improvement in overall skin clarity is usually seen at 4-8 weeks. Results depend on your skin condition, consistency of use, and whether you're using it correctly (2-3x weekly to start, then daily if tolerated).
Apply after cleansing, on clean dry skin. Use before toner, essence, serum, and moisturizer. The order is: Cleanser โ BHA Liquid (wait 20-30 min for maximum efficacy, optional) โ Toner โ Serum โ Moisturizer โ Sunscreen (AM only). Always apply sunscreen in the morning as BHA can increase sun sensitivity.
No, this product has a very low comedogenic rating of 1/5. The only ingredient with any potential pore-clogging concern is Butylene Glycol, which scores only 1 on CosDNA. The formula is specifically designed to unclog pores, not clog them. It's free from oils, silicones, and heavy emollients that typically cause congestion.
The product has a PAO (Period After Opening) of 12 months. The 100ml bottle typically lasts 4-6 months with regular use (2-3 pumps, 3x weekly). Store in a cool, dry place away from direct sunlight to maintain potency. If the product changes color, smell, or texture significantly, discontinue use.
Verdict: COSRX BHA Blackhead Power Liquid is an excellent entry-level BHA that delivers on its promises with a clean, minimal formula. The 4% Betaine Salicylate is gentler than traditional salicylic acid, making it ideal for sensitive skin or BHA beginners. While it may not be potent enough for severe acne, it excels at maintaining clear pores, reducing blackheads, and improving overall skin texture. The addition of niacinamide and hyaluronic acid makes it more than just an exfoliant. At its price point (especially when purchased from Asian retailers), it offers exceptional value for a product that lasts months. A true K-beauty cult classic that has earned its reputation through years of consistent results.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
A gentle yet effective chemical exfoliant featuring 4% Betaine Salicylate (BHA) and 68% Willow Bark Water to unclog pores, reduce blackheads, and reveal smoother, clearer skin. Formulated with Niacinamide to brighten and even skin tone without irritation.
โจ Texture & Feel
Deep Pore Cleansing
Oil-soluble BHA penetrates into pores to dissolve sebum, dead skin cells, and blackheads from within.
Gentle Exfoliation
Betaine Salicylate is milder than pure salicylic acid, making it suitable for daily use without irritation.
Brightening Effect
2% Niacinamide helps fade dark spots, reduce post-acne marks, and improve overall skin radiance.
Hydrating Base
Contains Sodium Hyaluronate, Panthenol, and Arginine to maintain hydration while exfoliating.
๐ก๏ธ Safety & Compatibility
Not recommended. Contains BHA (salicylic acid derivative) which should be avoided during pregnancy and breastfeeding per COSRX guidelines.
Free from fatty acids, oils, esters, polysorbates, and fermented ingredients that feed malassezia yeast.
Rated 1/5. Minimal pore-clogging ingredients. Butylene Glycol scores only 1 on CosDNA.
BHA can increase sun sensitivity. Always apply SPF 30+ sunscreen during the day when using this product.
New to chemical exfoliants? Start with 2-3 times per week and gradually increase usage as tolerated.
Do not use simultaneously with other acids (AHA, BHA), retinol, or Vitamin C. Alternate days instead.
๐ฌ Ingredient Breakdown
๐ฟ Betaine Salicylate 4% Proven
A gentler derivative of salicylic acid combined with betaine (a natural moisturizer). Oil-soluble to penetrate pores and dissolve sebum, dead skin cells, and blackheads while providing mild hydration.
- Mechanism: Exfoliates inside pores due to oil-solubility (unlike water-soluble AHAs)
- Equivalency: 4% Betaine Salicylate โ 2% pure Salicylic Acid in effectiveness
- pH Optimal: Most effective at pH 3.8-4.2 (this product: pH 4.0-4.5)
๐ณ Salix Alba (Willow) Bark Water 68% Proven
The base of this formula is willow bark water instead of plain water. Willow bark is a natural source of salicin, which has anti-inflammatory and soothing properties.
- Source: Natural precursor to salicylic acid with centuries of traditional use
- Benefit: Provides anti-inflammatory support to reduce redness and irritation
- Synergy: Complements the Betaine Salicylate for enhanced efficacy
โจ Niacinamide (Vitamin B3) 2% Proven
A multi-functional active that brightens skin, reduces dark spots, strengthens the skin barrier, and helps regulate sebum production.
- Research: Clinically proven to reduce hyperpigmentation and improve skin tone
- Sebum Control: Helps regulate oil production in oily/combination skin
- Barrier Support: Strengthens skin barrier and reduces transepidermal water loss
๐ง Sodium Hyaluronate 0.35-0.8% Proven
A smaller molecular weight form of hyaluronic acid that penetrates deeper into skin layers to provide lasting hydration.
- Function: Humectant that attracts and holds up to 1000x its weight in water
- Benefit: Counteracts potential drying effects of BHA exfoliation
๐งด Panthenol (Vitamin B5) 0.3-0.7% Proven
A soothing and hydrating ingredient that supports skin healing and maintains moisture levels.
- Function: Humectant and skin-conditioning agent
- Benefit: Calms irritation and supports wound healing
10 ingredients
Salix Alba (Willow) Bark Water, Butylene Glycol, Betaine Salicylate, Niacinamide, 1,2-Hexanediol, Arginine, Panthenol, Sodium Hyaluronate, Xanthan Gum, Ethyl Hexanediol
๐ Where It Fits in Your Routine
Use 2-3 times per week initially, gradually increasing to daily use if tolerated. Best used in evening routine.
๐ How to Use
Cleanse Your Face
Start with a clean, dry face. Double cleanse if wearing makeup or sunscreen.
Apply the BHA Liquid
Pump 2-3 drops onto a cotton pad or fingertips. Gently swipe or pat across face, avoiding eye and lip area.
Wait for Absorption
Allow 20-30 minutes for the product to fully absorb and work before applying next steps (optional but recommended for maximum efficacy).
Continue Your Routine
Follow with hydrating serum, moisturizer, and sunscreen (AM). Keep routine simple when using actives.
๐ค Who Is It For?
โ Perfect for you if:
- You struggle with blackheads, clogged pores, or sebaceous filaments
- You have oily, combination, or acne-prone skin
- You want a gentle introduction to chemical exfoliation
- You prefer minimal, no-fuss ingredient lists
- You need a fungal acne-safe exfoliant
- You want to improve skin texture and reduce closed comedones
โ Consider alternatives if:
- You are pregnant or breastfeeding (avoid all BHAs)
- You have very dry or dehydrated skin (may need stronger hydration)
- You need a stronger BHA for stubborn acne (try 2% salicylic acid)
- You have an aspirin allergy (salicylic acid is related to aspirin)
- You are already using multiple active products (retinol, AHA, etc.)
๐ฏ Skin Type Compatibility
Perfect match. Controls excess sebum, clears clogged pores, and reduces shine without over-drying.
Ideal for T-zone concerns. Targets oily areas while the hydrating base protects drier zones.
BHA's antibacterial and anti-inflammatory properties help prevent and treat breakouts. Fungal acne safe.
Gentler than most BHAs due to Betaine Salicylate. Start slowly (1-2x/week) and patch test first.
May be slightly drying. Use sparingly (1-2x/week) and follow with rich moisturizer. Consider AHA instead.
Great for maintenance and prevention. Keeps pores clear and skin smooth with regular use.
๐ Results Timeline
Initial Adjustment
Skin may feel slightly smoother. Some users experience mild purging as clogged pores surface. Tingling sensation is normal.
40% notice smoother textureVisible Improvements
Noticeable reduction in blackheads and sebaceous filaments. Pores appear cleaner and less congested. Skin has a natural glow.
70% see reduced blackheadsSignificant Results
Clearer, smoother skin texture. Fewer breakouts and clogged pores. Improved skin tone from niacinamide. Pores appear minimized.
85% report clearer skinLong-Term Benefits
Maintained clear pores with consistent use. Many users report this becomes a skincare staple they repurchase repeatedly.
90% continue repurchasingโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Gentle enough for sensitive and beginner acid users
- Minimal, effective ingredient list (only 10 ingredients)
- Fungal acne safe formula
- Excellent value for money (100ml lasts 4-6 months)
- Visibly reduces blackheads and clogged pores
- Improves skin texture and adds glow
- Fragrance-free and cruelty-free
- Contains bonus niacinamide for brightening
โ Criticized
- May be too gentle for severe acne (4% is mild)
- Slightly tacky/sticky finish on some skin types
- Faint citrus scent may bother some users
- Pump dispenser not travel-friendly (can leak)
- Results take 2-4 weeks to become visible
- Not suitable for pregnancy/breastfeeding
- pH slightly higher than optimal (4.0-4.5 vs ideal 3.8-4.0)
๐ฐ Budget-Friendly Alternatives (Dupes)
2% pure salicylic acid pads. Stronger and more effective for stubborn acne, but contains menthol which may irritate sensitive skin. 55-90 pads per container.
Pure 2% salicylic acid in a simple formula. More potent than COSRX but smaller bottle (30ml). No niacinamide or willow bark water.
2% salicylic acid with zinc. Similar gentle approach. Smaller bottle (30ml) but contains zinc for additional oil control.
๐ Comparison with Competitors
COSRX BHA Blackhead Power Liquid
$18-26Paula's Choice 2% BHA Liquid
$35The Ordinary Salicylic Acid 2%
$7.90Stridex Maximum Red Box
$5.50๐ฆ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required.
Opaque plastic bottle with pump dispenser. Pump has cap for protection.
Yes, 100ml is under TSA liquid limit. Secure pump cap tightly to prevent leaking.
โ Frequently Asked Questions
No, this product is NOT recommended during pregnancy or breastfeeding. COSRX officially advises avoiding AHAs and BHAs during pregnancy and breastfeeding. Salicylic acid (and its derivatives like Betaine Salicylate) can potentially be absorbed through the skin. Consult your healthcare provider for pregnancy-safe alternatives.
Yes! This product is fungal acne safe. It does not contain fatty acids, oils, esters, polysorbates, or fermented ingredients that feed malassezia yeast. It's actually recommended by skincare experts for those dealing with fungal acne as BHA helps control excess sebum that fungi thrive on.
It's best to avoid using these actives together in the same routine to prevent irritation and over-exfoliation. Alternate usage: use BHA on one evening, retinol or vitamin C on another. Wait 20-30 minutes after BHA application before applying other actives if you must layer. Never combine BHA with AHA in the same routine unless your skin is very tolerant.
This product is best suited for oily, combination, and acne-prone skin types. It's excellent for those dealing with blackheads, clogged pores, and sebaceous filaments. Due to its gentle formulation with Betaine Salicylate (milder than pure salicylic acid), it's also suitable for sensitive skin with proper introduction. Dry skin types may find it slightly drying and should use sparingly with extra moisturizer.
Most users notice smoother skin texture within 1-2 weeks. Visible reduction in blackheads and clogged pores typically occurs at 2-4 weeks of consistent use. Significant improvement in overall skin clarity is usually seen at 4-8 weeks. Results depend on your skin condition, consistency of use, and whether you're using it correctly (2-3x weekly to start, then daily if tolerated).
Apply after cleansing, on clean dry skin. Use before toner, essence, serum, and moisturizer. The order is: Cleanser โ BHA Liquid (wait 20-30 min for maximum efficacy, optional) โ Toner โ Serum โ Moisturizer โ Sunscreen (AM only). Always apply sunscreen in the morning as BHA can increase sun sensitivity.
No, this product has a very low comedogenic rating of 1/5. The only ingredient with any potential pore-clogging concern is Butylene Glycol, which scores only 1 on CosDNA. The formula is specifically designed to unclog pores, not clog them. It's free from oils, silicones, and heavy emollients that typically cause congestion.
The product has a PAO (Period After Opening) of 12 months. The 100ml bottle typically lasts 4-6 months with regular use (2-3 pumps, 3x weekly). Store in a cool, dry place away from direct sunlight to maintain potency. If the product changes color, smell, or texture significantly, discontinue use.
Verdict: COSRX BHA Blackhead Power Liquid is an excellent entry-level BHA that delivers on its promises with a clean, minimal formula. The 4% Betaine Salicylate is gentler than traditional salicylic acid, making it ideal for sensitive skin or BHA beginners. While it may not be potent enough for severe acne, it excels at maintaining clear pores, reducing blackheads, and improving overall skin texture. The addition of niacinamide and hyaluronic acid makes it more than just an exfoliant. At its price point (especially when purchased from Asian retailers), it offers exceptional value for a product that lasts months. A true K-beauty cult classic that has earned its reputation through years of consistent results.
