• Age
  From as early as age 20, the skin begins producing less collagen each year in a process called intrinsic aging. Lower levels of collagen lead to wrinkling and sagging skin. Our facial structure also changes with age. Cheekbones can begin to flatten as bone and muscle density change, causing skin and tissue on the bones to sit differently.
• Sun Damage (Photoaging)
  When UV rays penetrate the skin, they disturb processes that affect the skin's growth and appearance. In the short-term, sun damage can cause sunburn. Long-term exposure to UV rays can negatively affect the skin and the connective tissue beneath it, leading to the appearance of wrinkles, lines, and dark spots.
• Smoking
  Nicotine and other harmful substances in cigarette smoke can have a negative influence on skin and lead to signs of wrinkling and premature aging. Studies have further shown that skin in nasolabial folds is more obvious in smokers than in non-smokers, and that facial expressions made while smoking such as pursing the lips can further contribute to wrinkles around the mouth.
• Changes in Weight
  When losing a significant amount of body fat, it's common to experience loose or sagging skin, which can accentuate the appearance of facial lines. When gaining a significant amount of body fat in the face, having larger cheeks can also increase the appearance of laugh lines.

• Dehydrated Skin
  Dehydrated skin is different than dry skin: it refers to a lack of water as opposed to a lack of natural oils. One of the characteristics of dehydrated skin is a sunken or shadowy complexion, causing wrinkles to be more defined. Thankfully, this is a temporary issue. With proper hydration, the cosmetic effects of dehydration can be alleviated.
• Genetics
  The amount of Collagen and Elastin you produce is influenced by your genetic makeup. If your parents had prominent nasolabial folds, chances are you will also get them.
• Repetitive Facial Expressions
  Smile lines initially appear as dynamic wrinkles when you laugh or smile. Over time these repetitive expressions can cause the dynamic wrinkles to become static as skin loses its ability to snap back into place.
• Pollution
  Air pollution is an environmental stressor that, when combined with other environmental stressors, can cause premature aging in the skin. Studies have shown that air pollution can be linked to extrinsic skin aging.
• Sleep Deprivation
  They don't call it "getting your beauty sleep" for nothing. Skin enters its natural regeneration and repair process as you sleep, rebuilding its defensive barrier and producing Collagen. Studies have shown that chronic poor sleep quality is associated with increased signs of intrinsic ageing and diminished skin barrier function.

To begin with, nasolabial folds may only appear as dynamic wrinkles when you laugh or smile.

For those moments where you want temporary results quickly, NIVEA Q10 Anti-Wrinkle Specialist Targeted Wrinkle Filler provides dual-action benefits by visibly reducing the appearance of fine lines and wrinkles in just 5 minutes*, and by providing long term deep treatment to help reduce the appearance of wrinkles with regular use. Formulated with pure Q10 and Bioxifill® Peptides, this targeted wrinkle filler penetrates skin 10 layers deep** to make skin look younger and fight the look of stubborn wrinkles***. Use this targeted wrinkle filler on crow's feet, nasolabial folds (smile lines), lip lines, and forehead wrinkles for radiant, healthy-looking skin. Work this solution into part of your anti-aging face care routine, after cleansing and before applying your moisturiser to see a reduction in smile lines over time.

Unfortunately, you cannot prevent smile lines from forming. They are a natural part of aging and even children have them when they laugh or smile. There are things you can do to prevent them from deepening, which generally means avoiding the causes.

Muscles on the face can be toned like elsewhere on the body, helping to better control expressions. Some believe that when repeated over time, you may see a reduction in smile lines, though evidence to support this claim is limited. Still, as with facial massage, you can give the following a try every day without risking any harm:

• Push your lips upwards as though you are trying to kiss the sky and hold for 15-20 seconds. Repeat 5 times.
• Pull the corners of your mouth apart with your index fingers whilst contracting your facial muscles in slight resistance. Hold for 2-3 seconds and repeat 30 times.
• Pout your lips whilst pulling the corners of your mouth out. Hold for 15 seconds and repeat 5 times.
• Gently lift your cheekbones using the palms of your hands whilst pouting your lips out in a kissing motion. Hold for 20 seconds and repeat 5 times.