• Wrinkles develop when the elastic fibers in the skin stretch out.healthy skin image by Leticia Wilson from Fotolia.com
  
  Human skin contains elastic fibers that consist of collagen and elastin. As a result of such factors as diet, sun exposure and daily habits, these elastic fibers stretch, causing wrinkles to form in the skin. The wrinkles may be in fine lines, or deeper furrows, but natural methods for reducing their appearance consist of internal and external changes.
  
  

Sleep on Your Back

• The position you sleep in at night can cause wrinkles to develop, according to MedicineNet. People who regularly sleep on their side are at risk for increasing wrinkles on the cheeks and chin, while sleeping face down can cause wrinkles on the forehead that can produce a furrowed brow. To help reduce the formation of wrinkles while you sleep, sleep on your back.
  
  

Avoid Sun Exposure

• Excessive sun exposure is one of the main causes of skin damage, including the fine-line type of wrinkles, suggests the University of Maryland Medical Center. You can minimize sun exposure with protective clothing, sunglasses and sunscreen that blocks ultraviolet UVA and UVB radiation. The most skin damage occurs between 10 a.m. and 4 p.m., when 80 percent of the sun's UV rays occur, so you should avoid sun exposure during this time.
  
  

Eat Salmon

• Adding salmon to your regular diet can help with your wrinkles. Salmon contains omega-3, an essential fatty acid useful in obtaining good skin, according to MedicineNet. Fatty acids provide the nourishment your skin needs to keep it plump, providing a youthful appearance and reducing fine lines and wrinkles.
  
  

Restrict Tap Water Use

• Though many people use tap water to wash their face twice a day, the chlorine in the water presents a risk for wrinkles, according to the University of Maryland Medical Center. Chlorinated water reduces oil and moisture in the skin, so you should restrict tap water use on your face to once per day.
  
  

Stop Smoking

• Smoking causes wrinkles because the nicotine in tobacco restricts blood flow to the skin, limiting the oxygen and nutrients that would otherwise nourish it. Additionally, the chemicals in tobacco smoke damage collagen and elastin. Smoking cessation won't get rid of the wrinkles you already have, but it will stop them from getting worse and prevent any other smoking-related wrinkles from developing, according to Mayoclinic.com.