Shorter days, less sunlight, and suddenly you feel tired, sad, and sluggish. That's seasonal affective disorder (SAD), and light therapy is the first‑line treatment. The light therapy market report by MRFR shows that light boxes are the largest product segment, and the market is growing at 5.33% CAGR — from $1.03 billion to $1.824 billion by 2035. Why the rise? Because people are looking for non‑drug options for depression and sleep disorders.

What's driving growth? Blue light is the largest light type, but red light is the fastest‑growing — used for skin rejuvenation and wound healing. The light therapy market analysis highlights that homecare settings are the largest end‑user segment, but dermatology clinics are growing fast — as patients seek professional‑grade treatments for acne and psoriasis.

What's new? Wearable light therapy devices (vests, caps) for whole‑body treatment. Also, dawn simulators that wake you up with gradually brightening light, improving mood and energy.

The bottom line: if you feel down in winter, try a light box. Sit in front of it for 30 minutes each morning. It's simple, safe, and effective.