Lactic acid bacteria of the genus Leuconostoc, used as a skin-conditioning ingredient.
What it is
Leuconostoc is the INCI name for one or more species of bacteria of the genus Leuconostoc, a group of lactic acid bacteria. CosIng lists it as a skin-conditioning agent.
Where it is used
Found in 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 INCI name does not reveal the species or strain, or whether the cells are live or inactivated.
Functions
- Skin conditioning – miscellaneous
- Enhancing the appearance of dry and/or damaged skin by reducing flaking and restoring suppleness.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

