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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 completedpartly backed
    • Clean Moisture Deep Cleanser, Water Herb Foamoverstated
    • Experience 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.overstated
    • Contains baking soda to cleanly remove pore impurities, unwanted dead skin cells, and sebum.overstated
    • The rich, dense moisture bubbles leave only the moisture your skin needs and rinse cleanly away.overstated
    • Contains 8 types of hyaluronic acid and an amino acid complex to care for the skin barrier after cleansing and provide tightly packed moisture.overstated
    • Sensitive skin peace-of-mind care & skin low-irritation test completed!overstated
    • Water 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 found
    • This 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 found
    • The Beginning of Clear, Clean Skinnothing specific to check
  • 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 foampartly backed
    • Hi Amino All Cleanseroverstated
    • Facial cleanser removes impurities, dirt and daily grime from the surface while retaining moisture and improving texture of the skin.overstated
  • Key: Potassium Hydroxide (#4 on the ingredient list), Myristic Acid, Stearic Acid

    1 claim checked

    claims, checked

    • Migamsu Brightno 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 backed
    • Oily·Combination Skin Foam That Cleanses Thoroughly into Poresoverstated
    • It 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.overstated
    • With a young sprout foam that thoroughly removes sebum and impurities while keeping moisture, feel the moment when even your mood becomes refreshed after cleansing!overstated
    • Not only deep cleansing but also blackhead improvementoverstated
    • Hwahae x Suiskin joint developmentno supporting source found
    • Hwahae No. 1 Cleansing Foamno 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 poresoverstated
    • Experience skin elasticity and lifting with Medipeel's Red Lacto Collagen Clear Foam Cleanser. Clean down to the pores with aesthetic know-how.overstated
    • Red Lacto Collagen Clear Foam Cleanser 2.0overstated
    • Impurities 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 70mlnothing 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 skinplausible, not tested
    • Salicylic Acid Daily Gentle Cleanserpartly backed
    • Salicylic Acid Daily Gentle Cleanseroverstated
  • 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 2023011322backed by evidence
    • The hot cost-effective cleansing foam recognized by the Korea Consumer Agencyplausible, not tested
    • With dense, creamy fresh cream foam, gentle and clean pore cleansing in every corner.plausible, not tested
    • Actual test results confirmed 94% improvement in fine dust cleansing effect (IEC Korea Co., Ltd., 2021. 10. 25, 33 adults)partly backed
    • BHA (salicylic acid 5,000ppm): pore impurity care (dissolves sebum inside pores), dead skin and sebum careoverstated
    • Acne-prone skin relief functional completion, all hypoallergenic tests completed, so even sensitive skin can use with confidence.overstated
    • Confirmed 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)overstated
    • Vegan certificationno 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 mlbacked by evidence
    • Deep 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 backed
    • Proven to be safe for sensitive skin (Dermatologically Tested, KC Skin Research Center ran a test of 33 participants aged 19-59)partly backed
    • Powerfully absorbs sebum and leaves skin feeling clean and refreshed.partly backed
    • Removes waste in poresoverstated
    • Effectively removes impurities and improves facial tone. Soothes and hydrates the skin.overstated
    • Soothes the skinno supporting source found
    • Hydrates the skinno supporting source found
    • Helps 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 texturepartly backed
    • Core ingredients: hydroxyethyl urea, soapberry extract, soapwort leaf extractpartly backed
    • From 99% perfect cleansing to pore tighteningoverstated
    • Moisture cleansing oiloverstated
    • With fine micro oil particlesno supporting source found
    • 99% perfect cleansingno supporting source found
    • 99% cleansing of pore impuritiesno supporting source found
    • Deep cleansingㅣultrafine dust cleansingno supporting source found