Dr. Oz's Beauty Book

Anita is 58 years old and cannot stand the brown spots that have started appearing on her face. What are they? Dr. Oz explains that skin has cells that secrete pigment—tanning is when those cells secrete more pigment. "But sometimes those pigments stain the skin, sort of like freckles," he says. "When you're older, they become sun spots. These are these brown spots."

Using the Visia Complexion Analysis System, Dr. Evans can tell that Anita has been wearing sunscreen. "I'm really pleased with that," she says. "But despite that, she has still seen some damage, and this has been going on for some time."

Switching to the deeper dermis analysis, Dr. Evans says she sees many more sun spots developing. "There's a lot of things underneath the skin that will be coming to the surface," she says. "But I will say that I can see that you have been doing some protection, so it is encouraging."

One way Anita can reduce the effects of these spots, Dr. Evans says, is by switching to a more powerful sunscreen for her face—from an SPF 15 to SPF 45.