Asda has announced that it will be ending its partnership with Blue Light Card in its stores. The Blue Light Card is the UK’s leading discount service for those working in the emergency services, ...

The general public often sees red light therapy as the crème de la crème of light therapy (aka phototherapy). While more research is needed on its efficacy, it has shown promise in anti-aging benefits ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? At the simplest level, different colors of light have different wavelengths.