A synthetic prostaglandin analogue used in lash and brow products as a conditioning ingredient.
What it is
Ethyl tafluprostamide is a synthetic prostaglandin analogue, an ethylamide related to tafluprost; CosIng gives the chemical name dechloro dihydroxy difluoro ethylcloprostenolamide. CosIng lists it as a hair-conditioning and nail-conditioning ingredient.
Where it is used
Found in a small number of products, such as eyelash and eyebrow serums.
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
- Hair conditioning
- Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
- Nail conditioning
- Improving and/or enhancing the cosmetic characteristics of the nail (moisturizing, increasing sheen, reducing brittleness and flaking, etc.).
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

