Light Therapy & Circadian Tech

Blue Light Blocking Glasses: Science vs. Marketing Hype

Person wearing amber blue light glasses in a dim bedroom holding a phone with a smart mattress and smartwatch visible on the bedside, warm lighting and a white noise machine on the nightstand

Blue light blocking glasses have become a popular sleep accessory, but the question remains: how much benefit is derived from physiological science versus savvy marketing? This article examines the physiology of light and sleep, reviews clinical evidence through 2025, evaluates…