Keloids are overgrown scars left from skin injuries, surgical incisions, lacerations or burns. They can appear anywhere on the body but are most common over the breastbone, on the earlobes & shoulders.
Microdermabrasion involves a stream of fine micro-particles being blasted across the face by a kind of skin vacuum cleaner to help improve the texture and appearance of the skin.
Many of us have endured sunburns; the acute form of Sun damage to the skin, the reality is that the effects of sun-damaged skin increase with age. Over time we note the gradual changes (chronic) in our skin caused by the accumulation of sun exposure.