In toenails should always leave the biggest corners by cutting the "square" nail to avoid the jam. Some truths and myths about health and beauty Truths and Myths Unravel the myths about health and beauty skin should never be operated signals but can turn into cancer? Myth Often people say, "the guy had a sign that was operating and became a cancer ... I should not have moved.” Surely it was a cancer before operated. Operate a sign or paint does not cause processing to skin cancer.