Everyone’s skin ages in its own unique way. Much of the inevitable part of facial aging is driven by a person’s DNA and is considered intrinsic. Fortunately, 85 percent of the visible signs of aging can be directly attributed to extrinsic causes that are preventable, and can often be corrected, even if the damage has already been done. Making informed decisions about sun exposure, diet, exercise, smoking, and regular use of skin care products is key to staving off skin aging. Knowing the primary offenders and learning the best ways to protect you and your patients puts healthy, younger-looking skin within reach.