Our pick · Red Light Therapy

Joovv

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Our pick

Joovv

Third-party tested irradiance output, FDA-registered as a Class II medical device, and multiple peer-reviewed studies conducted using their panels

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Dosage

Typical Dose

10-20 minutes per session at 6-12 inches from the device, 3-5 times per week. Use 630-660 nm (red) for skin applications and 810-850 nm (near-infrared) for deeper tissue and recovery. Consistency matters more than session length.

Safety

General

Considered very safe at standard consumer-device intensities. No UV exposure. Most common side effect is mild, transient warmth or redness at the treatment site.

Cautions

Avoid direct eye exposure without appropriate eye protection.
People on photosensitizing medications (e.g., tetracyclines, retinoids) should consult a physician.
Evidence in pregnancy is insufficient — avoid until more data exists.

Red Light Therapy

Red light therapy (photobiomodulation) has growing RCT support for skin health and exercise recovery, though optimal protocols are still being defined.

Skin & Anti-Aging Muscle & Athletic Performance

BEvidence

By editorialUpdated 2026-05-251 min read

What it's actually good for

Red light therapy — formally called photobiomodulation — uses specific wavelengths of red (630-660 nm) and near-infrared (810-850 nm) light to stimulate mitochondrial function at the cellular level. The best-supported applications are in dermatology: multiple controlled trials show improvements in skin tone, collagen density, and fine wrinkle reduction with regular use. For athletic performance and recovery, a growing number of RCTs demonstrate that light therapy applied before or after exercise can reduce creatine kinase levels (a marker of muscle damage) and subjective soreness, though the optimal timing, wavelength, and dose are still debated. The mechanism is thought to involve enhanced cytochrome c oxidase activity and ATP production. Red light therapy is not a miracle device, but it has a legitimate and expanding evidence base — just be skeptical of claims that extend far beyond what trials have actually tested.

Claim-by-claim

Each claim graded independently

The overall grade is the floor. Some claims are stronger or weaker than the headline.

Red and near-infrared light improves skin appearance, collagen density, and wound healing

Several RCTs demonstrate improvements in skin complexion, collagen density, and fine wrinkle reduction with consistent red light exposure (630-660 nm). Effect sizes vary with device power and protocol.

Photobiomodulation enhances exercise recovery and reduces muscle fatigue

A body of RCTs shows that pre- or post-exercise light therapy (near-infrared, 810-850 nm) can reduce markers of muscle damage and perceived soreness. Results are promising but protocols vary widely across studies.

Sources

2 cited

[01]METAA Controlled Trial to Determine the Efficacy of Red and Near-Infrared Light Treatment in Patient Satisfaction, Reduction of Fine Lines, Wrinkles, Skin Roughness, and Intradermal Collagen Density IncreaseWunsch A, Matuschka K. Photomedicine and Laser Surgery. 2014

[02]MECHPhotobiomodulation: The Clinical Applications of Low-Level Light TherapyHamblin MR. Photobiomodulation, Photomedicine, and Laser Surgery. 2019

When the evidence changes, we’ll tell you.

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Medical disclaimer. The information on this site is provided for educational purposes only and is not intended as medical advice. It does not constitute a diagnosis, treatment plan, or recommendation for any specific health condition. Always consult a qualified healthcare professional before making changes to your supplement regimen, diet, or lifestyle — especially if you are pregnant, nursing, taking medications, or managing a medical condition.

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