Polyhydroxy acid

What is Gluconolactone?

Gluconolactone is a polyhydroxy acid, a larger relative of the alpha hydroxy acids. Formulators use it both as an acid and as a chelating agent that ties up trace metals in a formula. Its molecule is bigger than glycolic acid, so it behaves differently in a mix and shows up where a brand wants a lower free acid level.

Which products use it?

Of the 88 products whose labels we have read, 5 put this one on the front.

Product photo of Clean It Zero Pore Clarifying Cleansing Balm

BANILA CO

Clean It Zero Pore Clarifying Cleansing Balm

We checked 5 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

1backed1partly backed2overstated1says nothing

See the label check (5 lines)

Claims translated from Korean, originals preserved.

backed by evidence1
  • A travel size that is easy to pack lightly
    Korean original

    가볍게 챙기기 좋은 트래블 사이즈

partly backed1
  • [Vegan] Easy pore care
    Korean original

    [비건] 쉬운모공케어

overstated ad line2
  • Fresh deep cleansing all the way inside the pores
    Korean original

    모공 속까지 산뜻하게 딥 클렌징

  • It cleanly cleanses everything from makeup to old flakes, sebum, impurities and blackheads.
    Korean original

    메이크업부터 묵은 각질, 피지, 노폐물, 블랙헤드까지 말끔하게 클렌징해줍니다.

says nothing1
  • From cleansing to makeup, Banila Co, the house of radiant complexion
    Korean original

    클렌징부터 메이크업까지, 화사한 피부표현 명가 바닐라코

beplain

Mung Bean Pore Cleansing Milk Balm

We checked 7 lines this product advertises against the ingredient list and public documents. None of them hold up on their own. They are partly right at best.

1likely2partly backed2overstated2says nothing

See the label check (7 lines)

Claims translated from Korean, originals preserved.

likely, not proven1
  • A hybrid texture that turns from balm to milk
    Korean original

    밤에서 밀크로 변하는 하이브리드 제형

partly backed2
  • Contains 10,000ppm of mung bean extract
    Korean original

    녹두추출물 10,000ppm 함유

  • Contains the exfoliating ingredients PHA and LHA
    Korean original

    각질 제거 성분 PHA, LHA 함유

overstated ad line2
  • Gentle and clean deep cleansing
    Korean original

    순하고 말끔하게 딥 클렌징

  • A cleansing balm that cleanly melts away even sebum and flakes inside pores
    Korean original

    모공 속 피지와 각질까지 말끔하게 녹여주는 클렌징 밤

says nothing2
  • Pore confidence, mung bean
    Korean original

    모공자신감, 녹두

  • Joyful skin confidence, beplain
    Korean original

    즐거운 피부 자신감, 비플레인

Product photo of Amazing Deep Mint Clenasing Balm

Mamonde

Amazing Deep Mint Clenasing Balm

We checked 14 lines this product advertises against the ingredient list and public documents. None of them hold up on their own. They are partly right at best.

2likely5partly backed5overstated1no evidence1says nothing

See the label check (14 lines)

Claims translated from Korean, originals preserved.

likely, not proven2
  • Pores, sebum and flakes too!
    Korean original

    모공 · 피지 · 각질까지!

  • A sebum-targeting deep cleansing balm that cleanly washes away skin impurities and makeup
    Korean original

    피부 노폐물과 메이크업을 말끔하게 세정해주는 피지공략 딥클렌징밤

partly backed5
  • AHA, BHA and PHA added to the 3-second* ingredients
    Korean original

    3초* 성분에 AHA · BHA · PHA 성분을 더한

  • Blackhead and whitehead reduction -24.6%
    Korean original

    블랙헤드 및 화이트헤드 감소 -24.6%

  • Sebum amount reduction -30%
    Korean original

    피지량 감소 -30%

  • Old flake improvement -55.2%
    Korean original

    묵은각질 개선 -55.2%

  • Pore volume -26.5 %
    Korean original

    모공 부피 -26.5 %

overstated ad line5
  • 99.5 % pore impurity cleansing power with just one use
    Korean original

    단 1회 사용만으로 모공 노폐물 세정력 99.5 %

  • Oil amount reduction -85.6%
    Korean original

    유분량 감소 -85.6%

  • A 5D pore shrinking effect with just one use!
    Korean original

    단 1회 사용만으로 5D 모공 축소 효과!

  • A low irritation vegan formula daily balm
    Korean original

    저자극 비건포뮬라 데일리밤

  • With one cleansing balm, pores, flakes and even blemish soothing! A pore sebum softening cleansing balm that wipes out skin impurities by adding triple peeling ingredients to the 3-second ingredients
    Korean original

    클렌징밤 하나로 모공, 각질, 트러블 진정까지! 3초 성분에 3중 필링 성분을 더해 피부노폐물 초쳐버리는 모공피지연화 클렌징밤

no evidence1
  • Vegan certification completed
    Korean original

    비건 인증 완료

says nothing1
  • Water Friendly System
Product photo of Aqua Oasis Toner

S.NATURE

Aqua Oasis Toner

We checked 9 lines this product advertises against the ingredient list and public documents. None of them hold up on their own. They are partly right at best.

2likely3partly backed2overstated2no evidence

See the label check (9 lines)

Claims translated from Korean, originals preserved.

likely, not proven2
  • Vegan formulation
    Korean original

    Vegan 포뮬레이션

  • Watery texture, fast absorption, fresh finish
    Korean original

    워터리 텍스처, 빠른 흡수, 산뜻한 마무리

partly backed3
  • The first step after washing! Dense moisture charging & soothing, putting skin texture in order
    Korean original

    세안 후 첫 단계! 수분촘촘 충전 & 진정 피부결 정리

  • Gentle exfoliation care based on PHA (gluconolactone)
    Korean original

    PHA(글루코노락톤) 기반의 순한 각질케어

  • Daily use morning and evening
    Korean original

    아침저녁 데일리 사용

overstated ad line2
  • Deep moisture supply with "Aquaxyl (patented ingredient)" and "8 types of hyaluronic acid"
    Korean original

    "Aquaxyl(특허 성분)"과 "8종 히알루론산"으로 깊은 수분 공급

  • For all skin types
    Korean original

    전 피부타입 대상

no evidence2
  • Putting sebum inside pores in order
    Korean original

    모공 속 피지 정돈

  • Hypoallergenic (low irritation) formulation
    Korean original

    Hypoallergenic(저자극) 포뮬레이션

Product photo of Pore Clear Solution Cleansing Oil

YBK

Pore Clear Solution Cleansing Oil

We checked 2 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

1backed1overstated

See the label check (2 lines)

Claims translated from Korean, originals preserved.

backed by evidence1
  • In the case of a functional cosmetic, review completion status by the Korea Food and Drug Administration under the Cosmetics Act: none
    Korean original

    기능성화장품의 경우 화장품 법에 따른 식품의약안전청 심사 필유무: 없음

overstated ad line1
  • A magic cleansing oil where pores disappear at the same time as makeup!
    Korean original

    메이크업과 동시에 모공이 사라지는 매직 클렌징오일!

Do the ad lines about it hold up?

We checked the one advertised line that names this ingredient.

How it readAd lines
partly backed1 of 1

The count is of advertised lines, not products. One product can advertise the same ingredient in several lines, and each line was read on its own against the ingredient list and public documents.

What is it usually paired with?

Ingredients that other products put on the front of the label together with this one.