Sodium Citrate, chemically known as trisodium citrate, is the sodium salt of citric acid. It is a natural acid found in citrus fruits and is produced commercially by neutralizing citric acid with sodium hydroxide.
Usage in Cosmetics:
- In cosmetics and personal care products, Sodium Citrate primarily functions as a pH adjuster. It helps stabilize the pH of a product, ensuring it remains within a range agreeable to the skin.
- It is also used as a buffering agent, helping to maintain the stability and efficacy of active ingredients in a product.
- Additionally, Sodium Citrate can act as a chelating agent, binding with metal ions in a formula, which can improve the sensory feel of the product and prevent the degradation of active ingredients.
Citric Acid, Trisodium Salt
Sodium Citrate Dihydrate (when in hydrated form)
Skin Sensitivities and Risks:
Sodium Citrate is generally considered safe and non-irritating for most skin types, including sensitive skin.
However, as with any ingredient, it can cause reactions in individuals with specific allergies or sensitivities. It's always recommended to patch-test new products.
It is known for its low potential to sensitize or irritate the skin, making it a suitable ingredient for products aimed at sensitive skin consumers.
It is often appreciated for its ability to enhance the penetration of other ingredients into the skin, which can be beneficial in formulations designed for specific skin concerns.
Being a salt derived from a naturally occurring acid, it aligns well with formulations aimed at natural or clean beauty markets.
Sodium Citrate is widely used and well-regarded for its safety and efficacy, but it is always crucial to consider the overall formulation of a product, as interactions between ingredients can influence the final product's suitability for sensitive skin.