Eucerin asked 160 people to use the serum for four weeks then say how much younger they thought they looked.
Growing numbers of young men are going to great lengths to achieve what they see as the perfect face.
Faith Gebre, 19, from Stoke-on-Trent, has made it through to the competition's Great Britain finals.
We look at three viral hacks to unpick fact from fiction - the effects are often at best, temporary, say experts.
The Scottish Parliament has provisionally approved regulations for non-surgical cosmetic procedures.
The actor and director recalls being followed by paparazzi, having her phone tapped, and people looking through her bins after she shot to fame.
Parents say girls are being separated from their peers for wearing fake eyelashes and false nails.
The Traitors star says she stopped using it because she was concerned about chemicals.
Celebs including Charlie XCX swear by them. But what are polynucleotides and do they work?