Tiger stripes, angel scratches, red lightning: these are some of the many names given to stretch marks to help normalize them and make them a point of pride rather than shame. After all, they’re a symbol of growth and, in some cases, new life. Despite our best efforts, however, stretch marks continue to cause emotional distress and body confidence issues for all genders. Luckily, red light therapy shows incredible promise with regards to its effectiveness in both treating existing stretch marks and preventing new ones. But how does it work? And, while we’re at it, what even are stretch marks?...