What is Potassium Hydroxide?
Buffering
Potassium Hydroxide is a buffer that holds the pH steady.
This ingredient is listed in CosIng, the EU's cosmetic ingredient database. CosIng lists what it's used for as: Buffering.
CosIng function classes are the EU's standard list of the jobs an ingredient does inside a product, such as moisturizing, emulsifying, or preserving.
Which products feature it?
9 of the 2320 products we've checked feature this as a key ingredient. Products that disclose a concentration or list it near the top of the ingredient list come first.
Showing 1 to 9.
Key: Potassium Hydroxide (#4 on the ingredient list), Hydrogenated Palm Acid, Potassium Cocoyl Glycinate
10 claims, summarized
- Don't count on:
- better hydration · better barrier support
See each claim
claims, checked
Pore impurity cleansing power & ultra-fine dust simulant cleansing power test completed
partly backedClean Moisture Deep Cleanser, Water Herb Foam
overstatedExperience clear and clean skin with a mildly alkaline, close-fitting deep cleanser that thoroughly cleans every nook and cranny of your skin, from ultra-fine dust* to pore impurities.
overstatedContains baking soda to cleanly remove pore impurities, unwanted dead skin cells, and sebum.
overstatedThe rich, dense moisture bubbles leave only the moisture your skin needs and rinse cleanly away.
overstatedContains 8 types of hyaluronic acid and an amino acid complex to care for the skin barrier after cleansing and provide tightly packed moisture.
overstatedSensitive skin peace-of-mind care & skin low-irritation test completed!
overstatedWater herb grown in pristine Jeju is a plant with such excellent moisture retention that it overcomes dryness and grows even from rocks.
no supporting source foundThis is Abib's proprietary ingredient, which extracts water herb packed with moisture using high-purity hyaluronic acid, preserving the water herb itself.
no supporting source foundThe Beginning of Clear, Clean Skin
nothing specific to check

DEWYTREE
Hi Amino All Cleanser
Key: Potassium Hydroxide (#4 on the ingredient list), Sodium Lauroyl Oat Amino Acids, Sodium Cocoyl Apple Amino Acids
3 claims checked
claims, checked
Top grade value for money, a 1+1 pick! Moist cleansing with dense foam
partly backedHi Amino All Cleanser
overstatedFacial cleanser removes impurities, dirt and daily grime from the surface while retaining moisture and improving texture of the skin.
overstated
THE FACE SHOP
Migamsu Bright Facial Cleansing Foam
Key: Potassium Hydroxide (#4 on the ingredient list), Myristic Acid, Stearic Acid
1 claim checked
claims, checked
Migamsu Bright
no supporting source found
Key: Potassium Hydroxide (#4 on the ingredient list), Hydrogenated Palm Acid, Capryloyl Salicylic Acid
7 claims, summarized
- Don't count on:
- less visible pores
See each claim
claims, checked
Suiskin Cleansing Foam is weakly alkaline (pH 9.5-10.5) with the fresh energy of young sprouts, and helps you wash cleanly without any residue deep into the pores.
partly backedOily·Combination Skin Foam That Cleanses Thoroughly into Pores
overstatedIt is a daily cleansing foam for oily skin that cares for the skin congested by enlarged pores and excessive oil in a fresh and cooling way.
overstatedWith a young sprout foam that thoroughly removes sebum and impurities while keeping moisture, feel the moment when even your mood becomes refreshed after cleansing!
overstatedNot only deep cleansing but also blackhead improvement
overstatedHwahae x Suiskin joint development
no supporting source foundHwahae No. 1 Cleansing Foam
no supporting source found
Key: Potassium Hydroxide (#5 on the ingredient list), Myristic Acid, Stearic Acid
5 claims, summarized
- Don't count on:
- less visible pores · firmer skin
See each claim
claims, checked
99.4% cleansing power for impurities inside pores
overstatedExperience skin elasticity and lifting with Medipeel's Red Lacto Collagen Clear Foam Cleanser. Clean down to the pores with aesthetic know-how.
overstatedRed Lacto Collagen Clear Foam Cleanser 2.0
overstatedImpurities cleanly away with the technique of an aesthetic specialist. With the power of collagen and the softness of lacto, it delivers the skin's own natural health.
nothing specific to check[Olive Young No. 1 item] Red Lacto Collagen Wrapping Mask 70ml
nothing specific to check
Key: Potassium Hydroxide (#5 on the ingredient list), Salicylic Acid, Salix Alba (Willow) Bark Water
3 claims checked
claims, checked
For use on oily and combination skin
plausible, not testedSalicylic Acid Daily Gentle Cleanser
partly backedSalicylic Acid Daily Gentle Cleanser
overstated

innisfree
Volcanic BHA Pore Cleansing Foam
Key: Potassium Hydroxide (#5 on the ingredient list), Salicylic Acid, Volcanic Ash
8 claims, summarized
- You can expect:
- clearer-looking skin
- Don't count on:
- less visible pores · a smoother skin texture · less shine
See each claim
claims, checked
Functional cosmetic for acne-prone skin relief 2023011322
backed by evidenceThe hot cost-effective cleansing foam recognized by the Korea Consumer Agency
plausible, not testedWith dense, creamy fresh cream foam, gentle and clean pore cleansing in every corner.
plausible, not testedActual test results confirmed 94% improvement in fine dust cleansing effect (IEC Korea Co., Ltd., 2021. 10. 25, 33 adults)
partly backedBHA (salicylic acid 5,000ppm): pore impurity care (dissolves sebum inside pores), dead skin and sebum care
overstatedAcne-prone skin relief functional completion, all hypoallergenic tests completed, so even sensitive skin can use with confidence.
overstatedConfirmed strong SPF cleansing power by removing 100% or more of sunscreen (in-vitro test, no difference before and after product application and removal on artificial leather)
overstatedVegan certification
no supporting source found
Key: Potassium Hydroxide (#7 on the ingredient list), Sodium Bicarbonate, Kaolin
9 claims, summarized
- Don't count on:
- less visible pores · calmer skin · better hydration · a brighter skin tone
See each claim
claims, checked
5 fl oz / 150 ml
backed by evidenceDeep Pore Cleansing Soda Foam is formulated with 99.9% naturally derived ingredients. The magical potion of Green Tea and Baking Soda powerfully absorbs sebum and leaves skin feeling clean and refreshed.
partly backedProven to be safe for sensitive skin (Dermatologically Tested, KC Skin Research Center ran a test of 33 participants aged 19-59)
partly backedPowerfully absorbs sebum and leaves skin feeling clean and refreshed.
partly backedRemoves waste in pores
overstatedEffectively removes impurities and improves facial tone. Soothes and hydrates the skin.
overstatedSoothes the skin
no supporting source foundHydrates the skin
no supporting source foundHelps the skin regenerate and retain skin moisture.
no supporting source found
Key: Potassium Hydroxide (#7 on the ingredient list), Palmitic Acid, Lauric Acid
8 claims checked
claims, checked
A cleansing oil with a light texture
partly backedCore ingredients: hydroxyethyl urea, soapberry extract, soapwort leaf extract
partly backedFrom 99% perfect cleansing to pore tightening
overstatedMoisture cleansing oil
overstatedWith fine micro oil particles
no supporting source found99% perfect cleansing
no supporting source found99% cleansing of pore impurities
no supporting source foundDeep cleansingㅣultrafine dust cleansing
no supporting source found





