Flagged ingredient
A widely used preservative. Effective against bacteria and yeast at low concentrations, but rater opinions split on long-term skin tolerability and EU concentration caps.
Raters don't agree. Here's where each one stands
Yuka
Subscription
EWG Skin Deep
Nonprofit
INCI Beauty
Ad-supported
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EWG Skin Deep
Nonprofit
Flags moderate irritation concerns and notes restricted use in leave-on products in some jurisdictions.
Yuka
Subscription
Below the 1% EU concentration cap with no carcinogenicity evidence at typical use levels; rated low risk.
Coverage & match quality
8 ratings · 4 of 4 axes
INCI Beauty
Ad-supported
Listed as a "to monitor" preservative; safe at low concentrations but considered avoidable when alternatives exist.