Sodium Benzoate [ILN 30092]

SOD

8/10

Concern level

High concern

Sodium benzoate is the sodium salt of benzoic acid, used in cosmetics primarily as an antimicrobial preservative to inhibit yeast, mold, and some bacteria. It is most effective in acidic formulations and is commonly paired with other preservatives in water-based products. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/517055?utm_source=openai))

Pore-clogging

Non-comedogenic

Pregnancy

Safe

Regulatory

No data

Benefits

Antiseptic

Chemical Properties

Molecular Weight

144.1 g/mol

pH Range

3.00 - 5.50

Typical Concentration

0.10% - 1.00%

CAS Number: 532-32-1

Skin Type Compatibility

dry skin8/10

oily skin9/10

sensitive skin6/10

acne prone9/10

mature skin8/10

normal skin9/10

Interactions

incompatible with: High-pH formulations can reduce preservative efficacy, May need pairing with other preservatives for broad-spectrum protection, Can be less effective when neutralized by strongly alkaline ingredients

Risks & Warnings

Generally low risk at cosmetic use levels, but it can cause mild irritation or rare contact reactions in sensitized individuals. Because preservative efficacy is pH-dependent, poorly formulated products may have reduced protection. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/517055?utm_source=openai))

Vegan Cruelty-Free

Found In Products

StriVectin