Breakouts can be tough to manage, affecting confidence and making building a skincare routine tricky. Now, dermatologist Dr Eva Melegh has revealed some of the most common breakout triggers - which include new beauty products and cosmetics, and stress-related hormonal flux - however, the expert has also shared a somewhat surprising reason many people breakout - over-exercising. The dermatologist teamed up with MUA Jo Crossley to share common breakout causes as well as top tips for preventing