Snapshot
- Overview
- A preservative that keeps water-based products from spoiling.
- Category
- Preservative
- Type
- Preservative
Bronopol
Bronopol is a synthetic, water-soluble preservative used to control microbial growth in water-based products. It's valued for low-dose, broad-spectrum preservation, but regulatory caps and sensitization concerns limit its use.
Like this ingredient?
Our take
Is Bronopol a Good Ingredient?
It's an effective broad-spectrum preservative at low levels, but as a formaldehyde-releaser it carries a notable sensitization and irritation risk, and its use levels are restricted in some regions, which is why it's rated Fair.
What it does
Skin Benefits
Helps keep water-based products fresh by slowing microbial spoilage, supporting longer shelf stability; it may trigger irritation in some individuals, especially with sensitive skin.
Where you'll find it
Uses in Skincare & Cosmetics
Commonly used as a preservative in shampoos, body washes, and lotions, including both rinse-off and leave-on formats.
Before you use it
Safety
May irritate or sensitize skin, particularly in leave-on products or on compromised skin; patch testing is prudent for sensitive users. It can release small amounts of formaldehyde. Concentration limits apply in several jurisdictions, and formulators manage pH and co-ingredients to minimize reactivity.
Products with Bronopol
