“Only the Canadian version has Bio-Dyne, the ingredient that reduces puffiness. It was removed from the U.S. formula years ago,” says Dr. Woolery-Lloyd.

“Only the Canadian version has Bio-Dyne, the ingredient that reduces puffiness. It was removed from the U.S. formula years ago, ” says Dr. Woolery-Lloyd.

Don't blame mascara: the issue is really that "women who sleep with makeup on are likely not using skin care products at night," says Heather Woolery-Lloyd, a Miami dermatologist.