A hydrogenated, colourless derivative of curcumin, listed as an antioxidant.
What it is
Tetrahydrocurcumin is 1,7-bis(4-hydroxy-3-methoxyphenyl)heptane-3,5-dione, a derivative of curcumin, the yellow pigment of turmeric, in which the two carbon-carbon double bonds of the chain are saturated; unlike curcumin it is practically colourless. CosIng lists it as an antioxidant.
Where it is used
Appears on the ingredient lists of a small number of skin care 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.
The label does not show the concentration used.
Functions
- Antioxidant
- Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.