A dermatologist weighs in on how the viral, on-sale Peter Thomas Roth Instant Firmx eye treatment works its magic.

Under-eye filler can help get rid of eye bags, dark circles, and fine lines around the eyes. The typical cost of under-eye filler is $1,000, but it could vary based on how much you need.

Our fine lines did look dramatically plumped up after ... while those pesky puffy eye bags appeared reduced too. These patches are presented in dual compartment packaging for freshness, so ...