If you think your skin is in great shape, think again. If you have freckles or just a tan, then you probably have sun damage. In fact, a tan - your skin darkening as a result of sun exposure - is sun damage, according to dermatologists. That golden color is considered an injury to the epidermis; it's true what they say about no such thing as a safe tan. Of course if you take it one step further and get a...