After over 20 years in the pop industry, Atomic Kitten’s Natasha Hamilton needed a new challenge and decided to train as a skincare specialist. One of the skills she picked up during her training was how to spot the danger signs of skin cancer, and she's now shared those tips with OK! So when she was giving her mum Maria a facial and noticed an unusual patch of skin on her forehead, it set alarm bells ringing in Natasha’s mind. “I saw this mark, about half the size of a penny,” recalls Natasha.