The answer will make you frown (another expression that creates age lines)
Whether you’re talking, scowling or smiling, a groove forms on your skin the moment you move one of your facial muscles.
That groove is perpendicular to the movement of the underlying muscle, explains Dr. Anthony Rossi, a dermatologist at Memorial Sloan Kettering Cancer Center.
When it comes to your smile, the largest of the lines that form are the “nasolabial folds”—those big parentheses of skin that arc downward from the sides of your nose to the corners of your mouth, explains Dr. Marc Glashofer, a New York-based dermatologist.
And as you grow older, those happy-face grooves don’t fade away once you stop beaming, Glashofer says.
The more sun your skin soaks up, the more its connective tissue breaks down, leaving it less firm and less elastic.
For that reason, Glashofer and Rossi recommend the daily use of a sunscreen that guards against both UVA and UVB rays.
Both dermatologists also advise keeping your skin well hydrated, which starts with drinking plenty of water.
Rossi says H2O is a major component of your dermis—the layer of skin that houses many of the structural proteins that keep you looking youthful.