Sodium Erythorbate
What is Sodium Erythorbate?
Sodium erythorbate is the sodium salt of erythorbic acid, a sugar-derived compound chemically similar to ascorbic acid but lacking vitamin C activity. Produced through fermentation of glucose or synthetic processes, it serves as an antioxidant in cosmetics, particularly in emulsions, serums, and creams. Its primary function involves scavenging free radicals and donating electrons to inhibit the auto-oxidation of unsaturated fatty acids, fragrances, and colorants. This prevents rancidity, maintains product clarity, and extends shelf life without altering pH significantly. Commonly found in concentrations under 1%, it appears in both rinse-off cleansers and leave-on moisturizers, offering reliable preservation for water-based formulations prone to degradation.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
- Shields oils and actives from oxidative damage for longer product stability.
- Helps prevent unwanted color shifts and off-odors in formulations.
- Supports overall formula integrity without adding irritation risk.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| - Users seeking stable, long-lasting skincare products. | - Individuals with rare allergies to erythorbic acid derivatives. |
| - Those with sensitive skin preferring low-hazard preservatives. | - Those preferring completely preservative-free products. |
| - People using oil-containing formulas prone to rancidity. | - People sensitive to sodium salts in high concentrations. |
Safety Notes
- - Rated low hazard by safety assessments for cosmetic use.
- - Minimal absorption through skin with no significant concerns.
Frequently Asked Questions about Sodium Erythorbate
What is sodium erythorbate?
A sodium salt of erythorbic acid used as an antioxidant to prevent oxidation in skincare products.
Is sodium erythorbate safe for skin?
Safety reviews confirm it poses low risk when used as directed in cosmetics.
Does it clog pores?
It has a comedogenic rating of zero, making it unlikely to contribute to breakouts.