The habit of sleeping on your stomach causes nasolabial folds.

Sleeping on your side or stomach presses your facial skin against the pillow all night.

The continuous friction and pressure from gravity generated at this time push the cheek flesh upward, causing the skin around the mouth to fold and deepen nasolabial folds.

In particular, as we age, collagen and elastin in the skin decrease, causing a loss of elasticity,

Once wrinkles form, they do not easily recover and tend to harden as they are.

Therefore, to prevent wrinkles and maintain a symmetrical face shape, you should develop the habit of sleeping on your back facing the ceiling, and changing your pillow cover to a soft material is also helpful.