Fine lines usually form around the eyes (crow's feet and laughter lines) and mouth (marionette lines, lips lines and smokers' lines) as a result of facial expressions. These are not as deep or pronounced as "wrinkles" but are often a first indicator of skin ageing.
As we age we lose collagen and elastin in our skin and this, combined with other factors, causes our skin to develop fine lines and wrinkles. Facial movement and expressions, sun damage, stress, dehydration and lifestyle factors such as drinking, diet, alcohol and drugs can all contribute to the formation of fine lines.
Fine lines tend to appear on the face in areas most associated with facial expressions such as the forehead and around the eyes and mouth. Our faces also have most exposure to the sun, which is another contributing fact in the formation of fine lines.
CROW'S FEET/LAUGHTER LINES:
Crow's feet are the fine lines that appear around the eyes. Because the skin around our eyes creases when we smile or laugh, they are also known as "laughter lines".
Marionette lines are the lines running from the corners of the mouth towards the chin. They can form into deep lines or wrinkles but may start out as fine lines.
LIP LINES/SMOKERS' LINES/LIPSTICK LINES:
Lip lines are the fine vertical lines that appear above the top lip. They are also known as lipstick lines, as lipstick tends to bleed into them. As they are associated with pursing of the lips they are more prevalent in smokers' and are often referred to as "smokers' lines".
Fine lines are a natural part of the ageing process and we will all get them in some form or another. Those who smoke or spend a lot of time in the sun are more likely to develop fine lines however.