Examples of gravitational folds include nasolabial folds, which run from the sides of your nose down to the corners of your mouth, and marionette lines, which run from your mouth corners down to your chin.
As the name suggests, dynamic expression lines are caused by repeated facial expressions and the loss of collagen and elastin over time. Facial muscles are different from other muscles within the body because they’re directly attached to the skin, allowing us to make expressions, whether that’s frowning, smiling, or laughing.
Deep lines in the skin define elastotic creases. This particular type of wrinkle tends to show up where the skin creases naturally, such as the cheeks, lips, base of the neck, and the lips. Unlike crinkle lines, these are deep wrinkles
Wrinkle lines can pop up anywhere, from your forehead and eyes to neck and chest. These fine lines run parallel to each other, yet they can disappear when your skin is pulled taut because they are relatively shallow in terms of depth.