Sodium Benzoate is a widely used preservative found in both food and skincare products. It is the sodium salt of benzoic acid, a naturally occurring compound found in certain fruits like cranberries, plums, and apples. In skincare formulations, Sodium Benzoate plays a crucial role in preventing the growth of harmful bacteria, mold, and fungi, ensuring that products remain fresh and safe for use.
Sodium Benzoate can be obtained in two primary ways:
Natural Extraction – Benzoic acid occurs naturally in fruits and certain plants. It is harvested from sources like cinnamon bark, cloves, and ripe berries and then processed to form Sodium Benzoate.
Synthetic Production – Most commercial Sodium Benzoate is synthetically derived by combining benzoic acid with sodium hydroxide, making it highly effective and stable for use in cosmetic products.
While the synthetic process allows for a consistent, pure, and high-quality ingredient, its origin in nature highlights its biodegradability and safety when used in controlled amounts.
Sodium Benzoate is primarily used as a preservative in skincare and cosmetic products, ensuring a longer shelf life and preventing contamination. It is particularly effective in water-based formulations, such as:
Facial cleansers
Toners
Moisturizers
Serums
Sheet masks
Shampoos & Conditioners
Lotions & Body Washes
By inhibiting microbial growth, Sodium Benzoate helps keep these products safe, effective, and stable over time.
Sodium Benzoate is generally safe for all skin types, but some may benefit more than others:
Oily & Acne-Prone Skin – Helps prevent bacterial contamination in gel-based moisturizers, toners, and cleansers, reducing the risk of breakouts.
Combination Skin – Maintains the stability of water-based serums and lightweight creams.
Sensitive Skin – Sodium Benzoate is considered non-irritating at low concentrations but should be tested in patch tests for those with highly reactive skin.
Dry Skin – As it is usually combined with hydrating ingredients, it helps keep moisture-rich formulations fresh and effective.
Sodium Benzoate is not an active skincare ingredient in itself, but by preserving other active ingredients, it ensures that formulations remain potent and safe. Some common skincare concerns where Sodium Benzoate plays an indirect role:
Anti-Aging – Helps preserve serums and creams containing Vitamin C, Hyaluronic Acid, and Peptides.
Acne & Breakouts – Stabilizes acne-fighting formulations with Salicylic Acid or Tea Tree Oil.
Hydration & Barrier Protection – Ensures products with Ceramides, Aloe Vera, and Natural Oils maintain their efficacy.
The safety of Sodium Benzoate is well-documented by regulatory bodies, including:
FDA (Food and Drug Administration) – Approved as safe for food and cosmetics.
CIR (Cosmetic Ingredient Review Panel) – Deems it safe in concentrations up to 0.5% in skincare formulations.
EU Cosmetics Regulation – Allows use in cosmetic products following strict guidelines.
However, there are some key considerations:
Concentration Matters – At high concentrations, Sodium Benzoate can be irritating to the skin, but in skincare formulations, it is used in very low, non-irritating levels.
Extends product shelf life by preventing microbial growth.
Ensures safety by inhibiting bacteria, mold, and fungi.
Works well in water-based formulas like toners and gels.
Compatible with natural and organic formulations, making it ideal for clean beauty brands.
Many clean beauty brands prefer Sodium Benzoate as a preservative because it is:
Derived from natural sources like berries and cinnamon.
Non-toxic and biodegradable.
Accepted in Eco-Cert and COSMOS-certified products.
As consumers become more aware of harsh chemical preservatives, Sodium Benzoate serves as a gentle yet effective alternative in organic and natural skincare.
Russell Organics products that contain Sodium Benzoate:
