Humectant
What is Zinc PCA?
This ingredient is listed in CosIng, the European Commission’s public database of cosmetic ingredients. The function classes that database records for it are: Humectant, Skin conditioning.
A function class records the role an ingredient is put in a formula for. It is what the database files the ingredient under, not a finding of ours about what it does on skin.
Which products use it?
Of the 130 products whose labels we have read, 2 put this one on the front.

COSRX
Low pH Niacinamide Micellar Cleansing Water
We checked 3 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 backed1no evidence
See the label check (3 lines)
Claims translated from Korean, originals preserved.
- Functional cosmetic status: not applicable
Korean original
기능성 화장품 여부: 해당없음
- Weakly Acidic Niacinamide Micellar Cleansing Water
Korean original
약산성 나이아신아마이드 미셀라 클렌징 워터
- Main product specification: for use on all skin types
Korean original
제품 주요 사양: 모든 피부 사용
ZEROID
Pimprove Gel Cleanser
We checked 5 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.
2partly backed3no evidence
See the label check (5 lines)
Claims translated from Korean, originals preserved.
- A low irritation cleanser for oily skin that gently removes sebum and impurities
Korean original
피지 및 노폐물을 부드럽게 제거해주는 지성 피부용 저자극 세안제
- A sebum controlling, soothing line for oily and blemish-prone skin
Korean original
지성, 트러블 피부를 위한 피지조절 진정 라인
- OPTIMAL CARE FOR OILY & TROUBLED SKIN
- It soothes shiny, reddened skin and finds the skin's oil and moisture balance.
Korean original
번들거리고 붉어진 피부를 진정시키고 피부 유수분 밸런스를 찾아줍니다.
- A mild, gel cleanser that is hypo-allergenic and also normalizes the pH balance while relieving skin irritations and helping to maintain healthy skin.
What is it usually paired with?
Ingredients that other products put on the front of the label together with this one.