Kathleen Williams

The key to healthy, younger-looking skin is simple: what goes "in" is far more important than what goes "on." Skin cells need plenty of vitamins, minerals and healthy fats, like Omega-3, Omega-6 and Omega-9 fatty acids.

These "Essential Fatty Acids" (EFAs) strengthen and increase the fluidity of your delicate skin cell membranes. These cell membranes are the guardians of your skin - keeping toxins out and bringing moisture and nutrients in.

Though many things contribute to a younger, healthier appearance, one of the most important is an amazing molecule called collagen. About 80% of your skin is made from collagen, giving the skin its basic structure. Collagen makes skin stronger, thicker and more supple, which is what makes skin smooth, firm and strong - and young looking. But unfortunately as we age the skin loses collagen and your body gradually produces less and less.