Science
Mechanism of Action
Sodium Carbonate acts as a potent pH adjuster, creating an alkaline environment when dissolved in water. This alkalinity neutralizes acidic components, and its capacity for saponification helps to dissolve and emulsify skin lipids and debris. By influencing the acid-base balance, it assists in maintaining product integrity and supporting skin's pH regulation.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This white, odorless salt dissolves readily in water, forming strongly alkaline solutions (e.g., pH 10.52 at 1 mM, 11.26 at 100 mM). Its inherent stability allows it to establish and maintain a basic microenvironment, which can protect other ingredients within the formulation.
Conflicts
- acids (reacts violently, produces heat and carbon dioxide)
- magnesium
- phosphorus pentoxide
- calcium hypochlorite
- calcium
- fluorine (generates fire hazard)
Safety
Safety Profile
The CIR Expert Panel considers Sodium Carbonate safe for cosmetic applications when formulated to be non-irritating. Solutions concentrated above 10% or with a pH exceeding 11 are identified as skin and eye irritants due to their strong alkaline nature. However, at concentrations of 10% or less, it is generally deemed safe for contact with skin and hair. This ingredient complies with the general provisions of the EU Cosmetics Regulation and holds FDA GRAS status for direct food addition.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sodium Carbonate is a valuable ingredient for controlling product pH and aiding in effective cleansing, provided it is formulated at safe, non-irritating concentrations.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources