Snapshot
- Overview
- A preservative that binds metals and helps products last longer.
- Category
- Preservative
- Type
- Preservative
Tropolone
Tropolone is an aromatic monohydroxyketone used in cosmetic formulas as a preservative with some metal-chelating ability. It's selected to extend shelf life and improve stability by curbing microbial growth in water-rich products.
Like this ingredient?
Our take
Is Tropolone a Good Ingredient?
It rates Fair because, while it offers preservative support, its broad-spectrum efficacy and stability within a formula are modest compared with established systems, and at higher levels it can sting or trigger sensitization in delicate areas.
What it does
Skin Benefits
Reduces product spoilage that can degrade texture and scent, and adds preservative support in formulas with higher contamination risk.
Where you'll find it
Uses in Skincare & Cosmetics
Commonly included in lotions, gels, and shampoos as a preservative; also used in water-heavy serums to maintain product quality.
Before you use it
Safety
Generally safe at low cosmetic use levels, though it may irritate eyes or compromised skin and can cause mild stinging in sensitive users. Patch testing is prudent for very reactive skin.
Products with Tropolone
