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.
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Ingredient Snapshot

Overview
A preservative that keeps water-based products from spoiling.
Category
Preservative
Type
Preservative

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

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.

Uses In Skincare & Cosmetics

Commonly used as a preservative in shampoos, body washes, and lotions, including both rinse-off and leave-on formats.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

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.

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.

Products with Bronopol

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