A glycerol oligomer used as a humectant.
What it is
Polyglycerin-4 (tetraglycerol) is an oligomer made of on average four glycerol units joined by ether bonds. CosIng lists it as a humectant.
Where it is used
Found in creams, serums, toners and cleansers.
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 number in the INCI name refers to the average number of glycerol units; the label does not show the concentration used.
Functions
- Humectant
- Retaining and/or preserving the moisture in a product during use.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.