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The AHA BHA PHA LHA 35 Peel

The AHA BHA PHA LHA 35 Peel

Product Description

Product overview

Made in South Korea K-BEAUTY

A professional-grade 35% multi-acid peel combining AHA, BHA, PHA, and LHA to dramatically smooth skin texture, unclog pores, and reveal a more radiant, even-toned complexion in just 10 minutes per week.

35% Multi-Acid Blend Clinically Proven Non-Comedogenic Cruelty-Free Fragrance-Free Paraben-Free Vegan-Friendly
Pregnancy
Caution
Fungal Acne
No
Comedogenic
1/5
Size
30ml / 1.01 fl oz
Total Acids
35%
Usage Time
Max 10 min
Frequency
Once/Week
Best Used
PM Only
Real reviews · YouTube Shorts
Why it's different

35% Multi-Acid Power

Professional-strength blend of AHA, BHA, PHA, and LHA for comprehensive surface and pore exfoliation.

01

Texture & feel

SENSORY
Consistency
Gel-like
Scent
Fragrance-Free
Absorption
Wash-Off
Finish
Smooth & Refreshed

35% Multi-Acid Power

Professional-strength blend of AHA, BHA, PHA, and LHA for comprehensive surface and pore exfoliation.

Natural Pink Hue

Vitamin B12 (Cyanocobalamin) gives the peel its distinctive pink color while calming and soothing skin.

Barrier Support

Enriched with Panthenol (B5), Vitamin E, and Allantoin to protect and repair skin during exfoliation.

Hydration Boost

Hyaluronic Acid prevents dehydration while PHA (Gluconolactone) adds moisture-barrier benefits.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding

Contains 2% salicylic acid (within safe limits) but overall 35% acid concentration in a leave-on peel format. Consult your healthcare provider before use during pregnancy.

Fungal Acne (Malassezia)

Contains Polysorbate 60 which can feed malassezia yeast. Not recommended for those with fungal acne concerns.

Non-Comedogenic

Clinically proven non-comedogenic formula. Low comedogenic rating of 1/5 - unlikely to clog pores.

Sun Sensitivity

AHAs increase sun sensitivity. Always use SPF 30+ sunscreen the day after use and avoid direct sun exposure.

Sensitive Skin Warning

Not recommended for sensitive skin or those new to chemical exfoliants. Patch test required before first use.

Cruelty-Free & Vegan

COSRX is a certified cruelty-free brand. This product contains no animal-derived ingredients.

03

Ingredient breakdown

INGREDIENTS

Glycolic Acid 13%Proven

The gold-standard AHA with the smallest molecular size for deepest penetration. Effectively exfoliates surface dead skin cells and stimulates collagen production.

  • Function: Breaks down bonds between dead skin cells for smoother texture
  • Benefits: Brightening, anti-aging, texture refinement, hyperpigmentation reduction
Increases sun sensitivity. Always follow with SPF 30+ sunscreen.

Lactic Acid 8.8%Proven

A gentle AHA derived from milk that exfoliates while providing hydration benefits. Ideal for improving skin texture without excessive irritation.

  • Function: Gentle exfoliation with humectant properties
  • Benefits: Hydration, brightening, smoother texture, suitable for melanin-rich skin
Larger molecule than glycolic acid - gentler on sensitive skin while still effective.

Mandelic Acid 5%Proven

An AHA derived from bitter almonds with antibacterial properties. Slower, safer exfoliation action than glycolic acid, excellent for acne-prone skin.

  • Function: Gentle exfoliation with antibacterial action
  • Benefits: Acne treatment, hyperpigmentation, safe for darker skin tones

Salicylic Acid (BHA) 2%Proven

Oil-soluble BHA that penetrates deep into pores to dissolve sebum and dead skin cells. The gold standard for treating acne and blackheads.

  • Function: Penetrates pores to unclog and refine
  • Benefits: Acne treatment, pore minimization, anti-inflammatory
2% is the FDA-approved OTC concentration. Safe for most, but consult doctor during pregnancy.

Gluconolactone (PHA) 5%Promising

A next-generation polyhydroxy acid that exfoliates gently without irritation. Also functions as a moisturizer and barrier-strengthener.

  • Function: Gentle exfoliation with hydrating and antioxidant benefits
  • Benefits: Suitable for sensitive skin, strengthens barrier, doesn't increase sun sensitivity
Larger molecule size means gentler action - ideal for sensitive or reactive skin types.

Capryloyl Salicylic Acid (LHA) 0.02%Promising

A lipid-soluble derivative of salicylic acid. Gentler than traditional BHA with comparable efficacy for comedone reduction.

  • Function: Gentle pore-unclogging with anti-inflammatory benefits
  • Benefits: Less irritating than salicylic acid, effective against comedones
  • Research: 2009 study found LHA comparable to benzoyl peroxide for acne treatment

Vitamin B12 (Cyanocobalamin) -Soothing

Gives the peel its distinctive natural pink color while providing skin-calming benefits. Helps reduce irritation from active acids.

  • Function: Skin calming and natural colorant
  • Benefits: Reduces redness and irritation, anti-inflammatory

Panthenol (Vitamin B5) -Proven

Pro-vitamin B5 with exceptional moisturizing, anti-inflammatory, and wound-healing properties. Protects skin during exfoliation.

  • Function: Moisturizing, soothing, barrier repair
  • Benefits: Reduces irritation, promotes healing, improves elasticity

27 ingredients

Water, Glycolic Acid, Lactic Acid, Potassium Hydroxide, Gluconolactone, Mandelic Acid, Dipropylene Glycol, Panthenol, Salicylic Acid(2%), Methylpropanediol, 1,2-Hexanediol, Octyldodeceth-16, Citric Acid, Hydroxyethylcellulose, Pentylene Glycol, Sodium Polyacryloyldimethyl Taurate, Cyanocobalamin, Polyacrylate Crosspolymer-6, Hydroxypropyl Starch Phosphate, Ethylhexylglycerin, Capryloyl Salicylic Acid, Polysorbate 60, Disodium Phosphate, Sodium Phosphate, Tocopherol, Allantoin, Hydrolyzed Hyaluronic Acid

FREE FROM: Fragrance, Parabens, Sulfates, Mineral Oil, Silicones, Artificial Colors, Harsh Alcohols, Essential Oils, Formaldehyde
04

Where it fits in your routine

ROUTINE
1
Oil Cleanser
2
Water Cleanser
3
This Peel
4
Toner
5
Moisturizer
6
SPF (AM)

Use once a week in your PM routine only. Skip other actives (retinol, vitamin C, other acids) on peel nights. Always follow with SPF the next day.

05

How to use

HOW TO USE
1

Patch Test First

Apply a small amount to your inner arm and wait 24 hours. Proceed only if no irritation occurs.

2

Cleanse & Dry

Double cleanse your face and pat completely dry. Do not apply to damp skin.

3

Apply Generously

Spread an even layer across face, avoiding eye area and lips. A slight tingling is normal.

4

Wait Maximum 10 Minutes

Start with 5-7 minutes if new to acids. If tingling becomes burning, rinse immediately.

5

Rinse Thoroughly

Rinse with lukewarm water until completely removed. Pat dry gently.

6

Hydrate & Protect

Follow with a soothing toner and rich moisturizer. Apply SPF 30+ the next morning.

06

Who is it for?

WHO

Perfect for you if:

  • You have experience with chemical exfoliants
  • You struggle with rough, bumpy skin texture
  • You have congested pores or blackheads
  • You want to address dullness and uneven skin tone
  • You have hyperpigmentation or dark spots
  • You want professional-level results at home
  • You have oily or combination skin

Consider alternatives if:

  • You have sensitive or reactive skin
  • You are new to chemical exfoliation
  • You are pregnant or breastfeeding
  • You have active eczema, rosacea, or dermatitis
  • You have fungal acne (malassezia)
  • You have sunburned or compromised skin
  • You use prescription retinoids regularly
07

Skin type compatibility

SKIN TYPES
Oily Skin
Excellent

Ideal match. BHA penetrates pores to control sebum, while AHAs address surface texture and shine.

Combination Skin
Excellent

Multi-acid formula works well on different face zones. Focus on T-zone if needed.

Normal Skin
Excellent

Great for maintaining smooth, radiant skin and preventing congestion buildup.

Dry Skin
Good

PHA and lactic acid provide some hydration, but follow with rich moisturizer. Start with shorter application time.

Sensitive Skin
Poor

Not recommended. 35% acid concentration is too strong for sensitive skin. Consider gentler alternatives.

Acne-Prone Skin
Excellent

BHA unclogs pores, mandelic acid fights bacteria, and overall formula is non-comedogenic. Great choice.

08

Results timeline

6-8 WEEKS
Immediately

Instant Smoothness

Skin feels immediately smoother and softer after rinsing. Slight tingling during application is normal.

95% noticed
1-2 Weeks

Improved Texture

Rough patches diminish, skin surface becomes more refined. Pores appear smaller and clearer.

80% noticed
3-4 Weeks

Brighter Complexion

Noticeable reduction in dullness. Skin tone appears more even and radiant. Fewer blackheads.

75% noticed
6-8 Weeks

Hyperpigmentation Fading

Dark spots and post-acne marks begin to fade. Overall complexion is more luminous and even.

65% noticed
09

Ratings by platform

1K+ REVIEWS
Amazon
4.4
Rating
850+
Reviews
Main complaint: Tube packaging can leak from the bottom over time
iHerb
4.6
Rating
200+
Reviews
Main complaint: Small bottle size for the price point
YesStyle
4.5
Rating
150+
Reviews
Main complaint: Too strong for beginners, can cause irritation
Ulta
4.3
Rating
100+
Reviews
Main complaint: Wish it came in a larger size option
10

Pros & cons

BALANCED

Praised

  • Immediate smoothing results after first use
  • Effective for stubborn texture and blackheads
  • Less stinging than The Ordinary AHA/BHA peel
  • No vinegar-like smell (unlike some competitors)
  • Contains soothing ingredients to reduce irritation
  • Multi-acid formula addresses multiple concerns
  • Helps fade acne scars and dark spots
  • Fragrance-free and paraben-free

Criticized

  • Small 30ml size doesn't last long
  • Tube packaging prone to leaking
  • Too strong for sensitive skin types
  • Requires patch test and careful application
  • Not fungal acne safe (contains polysorbate)
  • Can cause purging in first few weeks
  • Must avoid sun exposure after use
  • Not suitable for acid beginners
11

Budget-friendly alternatives (dupes)

DUPES
85% Match
AHA 30% + BHA 2% Peeling Solution
$9.00
Budget Pick

Similar acid concentration with 30% AHA + 2% BHA. More intense formula without PHA or LHA. Stronger scent (vinegar-like) and more tingling. Larger 30ml bottle at lower price.

70% Match
Overnight Exfoliating Treatment
$6.00
Budget Pick

Gentler leave-on formula with lower acid concentration. Good for beginners or sensitive skin. Contains PHAs for barrier support. Different application method (overnight).

65% Match
AHA BHA PHA Peeling Solution
$8.50
Budget Pick

Affordable dupe with similar AHA/BHA blend. Slightly lower concentration. Good entry-level option for those new to chemical peels.

12

Comparison with competitors

SIDE-BY-SIDE
AHA 30% + BHA 2% Peeling Solution
Total Acid Concentration 32%
Acid Types AHA + BHA only
Size 30ml
Soothing Ingredients Panthenol, Aloe
Application Time 10 minutes max
Skin Perfecting 25% AHA + 2% BHA Exfoliant Peel
Total Acid Concentration 27%
Acid Types AHA + BHA only
Size 30ml
Soothing Ingredients Vitamin E, Chamomile
Application Time 1-5 minutes
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store in a cool, dry place away from direct sunlight. Keep tightly closed after use.

Packaging

Squeeze tube with flip cap. Check bottom seal regularly as some users report leaking.

Travel Friendly

Yes, 30ml is under 100ml TSA liquid limit. Pack upright to prevent leakage.

13

Frequently asked questions

FAQ

Use with caution. While the product contains 2% salicylic acid (within the ACOG-recommended safe limit), the overall 35% acid concentration in a leave-on peel format is higher than typically recommended during pregnancy. The glycolic acid content (13%) is also a consideration. Consult your healthcare provider before use during pregnancy or breastfeeding. If you proceed, consider reducing application time to 5 minutes or less.

No, this product is NOT fungal acne safe. It contains Polysorbate 60, an emulsifier that can feed malassezia yeast and potentially worsen fungal acne. If you have fungal acne concerns, look for alternatives without polysorbates, fatty acids, or fermented ingredients.

Not on the same day. This is a powerful 35% acid treatment. On peel days, skip all other actives including retinol, vitamin C, niacinamide serums, and other AHA/BHA products. You can resume your regular active routine the following day. Never layer this peel with other exfoliants or retinoids - this can cause severe irritation and damage your skin barrier.

Best for oily, combination, normal, and acne-prone skin types. The multi-acid formula excels at addressing congestion, texture issues, and excess oil. NOT recommended for sensitive skin or those new to chemical exfoliation - the 35% acid concentration is professional-strength and can cause irritation in reactive skin types.

You'll notice immediate smoothness after your first use. Improved texture typically appears within 1-2 weeks of consistent weekly use. Brighter, more even skin tone develops around weeks 3-4. For hyperpigmentation and stubborn dark spots, expect 6-8 weeks of regular use for visible fading. Some users experience initial purging (temporary breakouts) in the first 2-3 weeks.

Use once a week in your PM routine only: 1) Double cleanse, 2) Pat skin completely dry, 3) Apply this peel and wait max 10 minutes, 4) Rinse thoroughly with lukewarm water, 5) Apply soothing toner, 6) Finish with moisturizer. The next morning, apply SPF 30+ sunscreen as your skin will be more sun-sensitive.

No, this product is clinically proven non-comedogenic with a comedogenic rating of 1/5. The formula contains no pore-clogging oils, and the BHA (salicylic acid) actually helps unclog pores by dissolving sebum and dead skin cells within them. It's designed to clear congestion, not cause it.

The product has a PAO (Period After Opening) of 12 months. Store in a cool, dry place away from direct sunlight and keep the cap tightly closed. With once-weekly use, the 30ml tube typically lasts 3-4 months depending on how generously you apply. Check the bottom seal periodically as some users report leakage issues.

— Skincarisma verdict
4.3 / 5 ★★★★☆

Verdict: The COSRX AHA BHA PHA LHA 35 Peel is an impressive professional-strength exfoliating treatment that delivers visible results for experienced acid users. The unique four-acid combination (AHA, BHA, PHA, LHA) offers comprehensive exfoliation while the vitamin-trio (B5, B12, E) helps minimize irritation. It outperforms many competitors in gentleness despite its high concentration, with less stinging and no harsh scent. However, the small 30ml size, potential tube leakage, and unsuitability for sensitive skin or fungal acne sufferers are notable drawbacks. Best for oily, combination, and acne-prone skin types looking for a powerful weekly treatment to smooth texture, unclog pores, and brighten complexion.

Product Overview

question
lightbulb What are Quick Product Notes?

Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.

muscle Pro Tip Alert!

Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.

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Quick Product Notes

Click on icons for more information
question
lightbulb What are Notable Effects & Ingredients?

Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.

We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.

muscle Pro Tip Alert!

Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.

Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you

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Notable Effects & Ingredients

anti-aging Anti-Aging from 7 ingredient(s):
Glycolic Acid Lactic Acid Gluconolactone Mandelic Acid Citric Acid Tocopherol Hydrolyzed Hyaluronic Acid
brightening Brightening from 6 ingredient(s):
Glycolic Acid Lactic Acid Mandelic Acid Salicylic Acid Citric Acid Hydrolyzed Hyaluronic Acid
wound Promotes Wound Healing from 6 ingredient(s):
Glycolic Acid Panthenol Citric Acid Tocopherol Allantoin Hydrolyzed Hyaluronic Acid
ache Ache-fighting from 2 ingredient(s):
Glycolic Acid Salicylic Acid
question
lightbulb What are Ingredients Related to Skin Type?

Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.

We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.

muscle Pro Tip Alert!

A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.

One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
2
oily-skin Oily/Acne-Prone Skin
4 2
sensitive-skin Sensitive Skin
1
question
lightbulb What is the Ingredient Safety Breakdown?

Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.

muscle Pro Tip Alert!

EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
70% 11% 18%

Product ingredient list

Showing first 5 of 27 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
4 B
Glycolic Acid
Ph Adjuster, Buffering Agent, Exfoliant, Exfoliating, Buffering
brightening Brightening
ache Ache-fighting
anti-aging Anti-Aging
Promotes Wound Healing
Dark Spots
Texture
Pores
0 Unknown
Lactic Acid
brightening Brightening
anti-aging Anti-Aging
0 Unknown
Potassium Hydroxide
Buffering
1 Unknown
Gluconolactone
Solvent, Fragrance, Humectant, Skin Conditioning
anti-aging Anti-Aging
VIEW ALL INGREDIENTS