Sodium nitrate is an inorganic salt occasionally used in cosmetic formulations as a preservative, antimicrobial agent, and corrosion inhibitor. It functions as a supporting formulation ingredient rather than an active treatment compound.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation | Uncommon | Possible transient redness or stinging, typically at higher concentrations or on compromised skin. |
Allergic contact dermatitis | Rare | Sensitization is infrequently reported in the dermatological literature. |
Mucous membrane or eye irritation | Uncommon | Can occur with accidental contact in concentrated form. |
Nitrosamine formation concern | Rare | Theoretical risk of forming nitrosamines when combined with certain amines; relevant to formulation safety rather than direct clinical reaction. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.