Science
Mechanism of Action
On the skin, Sodium Nitrate acts as a soothing agent, contributing to the reduction of discomfort or irritation. Its mechanism for topical skin relief is not extensively detailed in current research. In broader cosmetic applications, it can also modify product viscosity.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium Nitrate demonstrates stability in neutral or alkaline solutions, performing optimally at a pH of 7.0 or higher. It is hygroscopic, requiring protection from moisture to maintain integrity.
Conflicts
- Combustible materials (due to its strong oxidizing properties)
- Strong acids (can lead to the production of nitric acid)
- Reducing agents
- Cellulose
- Amines (carries a risk of nitrosamine formation when converted to nitrite)
- Chemically active metals
- Moisture
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has not conducted a specific safety assessment for Sodium Nitrate in cosmetics, nor has the Scientific Committee on Consumer Safety (SCCS) issued an opinion on its use or maximum safe concentration. While regulated as a food additive (E251) by the FDA with limits not exceeding 0.05% in cured meats, there is a significant concern regarding its potential to convert to nitrites, which can subsequently form carcinogenic nitrosamines in the presence of amines, especially under specific formulation conditions like high pH or elevated temperatures. The FDA has voiced concerns about nitrosamine contamination in cosmetics due to their potential to penetrate the skin. It is not listed on EWG's Skin Deep Restricted or Unacceptable Lists.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Given the lack of a comprehensive cosmetic safety review by CIR or SCCS and the concerning potential for carcinogenic nitrosamine formation, Sodium Nitrate is not recommended for precision skincare formulations.
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