A synthetic organic compound, listed as an antioxidant, chelating and skin-protecting ingredient.
What it is
Trimethoxybenzylidene pentanedione is 3-[(3,4,5-trimethoxyphenyl)methylene]-2,4-pentanedione, a synthetic organic compound in which a trimethoxybenzylidene group is attached to pentane-2,4-dione. CosIng lists it as an antioxidant, chelating and skin-protecting ingredient.
Where it is used
Appears on the ingredient lists of a small number of products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
Functions
- Antioxidant
- Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.
- Chelating
- Forming complexes with metal ions which could affect the stability and/or appearance of cosmetics.
- Skin protecting
- Helping to avoid harmful effects to the skin from external factors.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

