Snapshot
- Overview
- A preservative that fights bacteria and mold in low-pH products.
- Category
- Preservative
- Type
- Preservative
Benzoic Acid
Benzoic acid is an aromatic carboxylic acid that functions as a pH-dependent preservative in cosmetics and personal care products. It limits microbial growth at low pH and maintains freshness, though it can present an irritation risk for some users.
Like this ingredient?
Our take
Is Benzoic Acid a Good Ingredient?
It effectively preserves low-pH formulas, earning it a Good rating, though it's more prone than its salt forms to cause stinging or irritation, so sensitive users may want to patch test first.
What it does
Skin Benefits
Provides antimicrobial protection in lower-pH formulas, helping reduce product spoilage. Those prone to sensitivity may want to patch test first.
Where you'll find it
Uses in Skincare & Cosmetics
Often used in acidic toners, gels, and facial cleansers, and also appears in shampoos and conditioners that need preservation at lower pH.
Before you use it
Safety
Can irritate or sting, especially on compromised skin or near the eyes and mucosa; start with limited exposure if sensitive. Avoid stacking with strong exfoliants in the same routine to minimize irritation.
Products with Benzoic Acid
