Ingredients

• The American brand of Preparation H was reformulated years ago and the ingredient called Bio-Dyne or live yeast cell derivative (LYCD), which is the ingredient in Preparation H that is supposed to help reduce wrinkles, was removed. The brand of Preparation H that is sold in Canada still contains LYCD, but in the U.S. it was replaced with phenylephrine. This ingredient is anti-inflammatory--and reduces puffiness and dark under-eye circles.
  
  

Usage

• If you apply Preparation H around your eyes and it causes any kind of discomfort, wash it off completely and don't use it. It can cause a burning sensation for people who have more sensitive skin. If you can wear it without any discomfort, you can apply the Canadian brand of Preparation H around your eyes and leave it overnight as an eye cream. Since there is no rock-solid proof that it works on wrinkles you will have to be the judge of how long you need to keep applying it before your wrinkles disappear.