Snapshot
- Overview
- A preservative that helps keep water-based formulas free of contamination.
- Category
- Preservative
- Type
- Preservative
Nitropropane-1,3-Diol
Nitropropane-1,3-diol is a synthetic nitro diol used in water-based cosmetics as a preservative component, selected to stabilize formulas by limiting microbial spoilage and often paired with other agents to broaden preservation performance.
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Our take
Is Nitropropane-1,3-Diol a Good Ingredient?
It's effective at low levels, but it has a higher irritation and sensitization potential in some users, which is why it rates Fair. Performance depends on proper formulation, and incompatibilities with certain amine/nitrite systems can raise safety concerns.
What it does
Skin Benefits
Helps keep water-based formulas stable against contamination through normal use, and often complements other preservatives to improve overall system reliability.
Where you'll find it
Uses in Skincare & Cosmetics
Included in toners, gels, lotions, and cleansers at low levels to support the preservative blend.
Before you use it
Safety
May cause irritation or allergic contact dermatitis in susceptible users. Follow regional concentration limits and avoid incompatible systems (e.g., with certain amines/nitrites) to reduce nitrosamine risk. Patch testing is advisable for sensitive skin.
Products with Nitropropane-1,3-Diol
