The skin care lesson your mother always told you...wear sun screen! Not only do you need to wear it (everywhere), you need to reapply it every hour or so, if you're out in the heat or at the beach because the wind, sand and salt water will take that protective sheild right off, leaving your skin vulnerable to sun burn.

However, I work in an office and not at the beach. The most sunlight I receive in a workday is at 6am on my five block walk to Spinning, streams of light through the window near my desk (on a nice day) and by the time I head home the sun is beginning to set. Yet, I still wear SPF all over my face. I make sure all of my daily moisturizers are SPF-friendly and always have chapstick or lipgloss in my oversized Rebecca Minkoff with sun protection.

The problem with my SPF overload? Vitamin D levels can suffer from not enough sunlight and overuse of SPF.

According to Palm Beach-based dermatologist and Professor at University of Miami, Dr. Kenneth Beer, says that Vitamin D deficiency is on the rise. "Practice moderation and get some sun exposure, but avoid getting burned. You should also get your Vitamin D levels checked and if you're deficient, and if so replace it with oral supplements. It's easy to do and essential to your wellness. Avoid getting burned," Dr. Beer explains.

Where else can you get Vitamin D? Milk, citrus fruits, salmon, tuna, a whole egg, sardines...the list goes on!

Chill out on the SPF until you hit the beach! Advice from our very own expert.