3. Skipping Out On Sunscreen
Wearing sunscreen may be something that you may associate with the sunny summer months, but skipping out on sunscreen every day (even on those rainy days!) is one of the biggest beauty mistakes anyone can make.

“Because many signs of aging are caused or exacerbated by sun damage, sunscreen is the best anti-aging treatment in your skincare routine,” suggests Dr. Schlessinger. “Most importantly, sunscreen is your first line of defense against skin cancer.”

But even if you’re indoors inside all day, Schlessinger still stresses the importance of wearing sunscreen products, as car and office windows don’t exactly shield you from the sun’s harmful UVB rays.

“Most car, home and office windows protect against UVB rays, but they leave you unprotected from UVA rays that cause premature signs of aging, as well as skin cancer,” says Schlessinger. “By wearing a broad spectrum sunscreen every day, you can shield your skin from both UVA and UVB rays.”