Do LED light therapy masks actually work?

Across the reviewers and specialist communities we read, the consensus is that results are gradual and require consistency. Multiple r/SkincareAddiction and r/30PlusSkinCare users reported visible improvements in skin tone, texture and fine lines only after roughly 8 weeks to 3 months of using a mask 4-6 times per week. Red and near-infrared wavelengths are most associated with anti-aging, while blue light is cited for targeting acne-causing bacteria. Nobody we read described overnight results.