Wrinkling is an inevitable part of aging, and it's impossible to avoid getting some lines and creases. But no matter what you weigh, there are ways to protect your skin from excess wrinkles.
Practice good sun protection. Protecting yourself when you're outside in the sun is the No. 1 way to prevent wrinkles. Exposure to the sun's ultraviolet rays damages the skin, leading to about 90 percent of all wrinkles [sources: WebMD, Merck Source]. Wear a sunscreen of SPF 30 or higher with UVA/UVB protection. Cover up or go in the shade during the peak sun hours of 10 a.m. to 4 p.m. Steer clear of tanning parlors, too.
Quit smoking. Some people may smoke because they're afraid of gaining weight. It's true that smokers weigh, on average, 4 to 10 pounds (1.8 to 4.5 kilograms) less than non-smokers who eat and exercise the same amount, and that they tend to put on those 4 to 10 pounds when they kick the habit. But smoking is also one of the biggest causes of wrinkles (not to mention heart disease, lung cancer, emphysema and a wide assortment of other deadly diseases) [source: Forever Free: A Guide to Remaining Smoke Free]. Smoking leads to wrinkles by constricting tiny blood vessels, which reduces the supply of oxygen and other nutrients to the face. Smokers also get lines around their mouths from continually puckering their lips to puff on cigarettes.
Lose weight in a healthy way. The yo-yo dieting that some women use to lose extra inches can really wreak havoc on the face. Repeatedly losing and gaining weight stretches the skin, making it less elastic, while depleting the face's padding. "You can get away with it in your 20s, you may be able to get away with it in your 30s, but once you get into your 40s, yo-yo dieting may cause greater loss from the fat pads in your face," Dr. Weiss says.
Don't squint. When your mother warned you not to make faces "because your face will stay like that," she was half right. Frowning, squinting or scowling repeatedly can leave permanent lines. Wear sunglasses outside so you don't have to squint. And cheer up!
If your skin is starting to show some signs of age, there are ways to smooth out wrinkles, but stick to the science and skip the hype. There are no "miracle cures" for wrinkles. No cream, gel or pill is going to make a 60-year-old look 20 again. However, there is some evidence that creams and other topical preparations containing antioxidants like vitamins C and E, selenium or retinoic acid (a form of vitamin A) can minimize the look of wrinkles [sources: Burke KE, Weiss].