Red Light Therapy — FAQ

Everything you need to know about red light therapy — from your first session to building an advanced photobiomodulation protocol.

What Is Red Light Therapy?

Red Light Therapy (RLT), also known as photobiomodulation, uses specific wavelengths of red and near-infrared light to support cellular function and energy production.

Unlike heat-based therapies, red light therapy works by delivering light energy directly to cells, helping support recovery, skin health, circulation, and overall wellness.

How It Works

• Red light penetrates the skin to support collagen and elastin production
• Near-infrared light penetrates deeper into muscles, joints, and connective tissues
• Supports cellular energy production (ATP)
• Promotes recovery, circulation, and tissue repair
• Non-invasive and drug-free

Benefits of Red Light Therapy

Consistent use may support:

• Healthier skin appearance
• Collagen and elastin production
• Reduced appearance of fine lines and wrinkles
• Muscle recovery and performance
• Joint comfort and mobility
• Improved circulation
• Reduced inflammation
• Enhanced sleep quality
• General wellness and recovery

Results vary based on consistency, treatment area, and individual response.

Understanding Light Wavelengths

Note: Far-infrared generates heat and is commonly used in infrared saunas. It is not considered photobiomodulation therapy.

Before Your Session

Prepare Your Skin

For optimal light absorption:

• Clean and dry skin is recommended
• Remove makeup, sunscreen, lotions, or oils when possible
• Expose the treatment area directly to the light

Clothing Recommendations

For full-body treatments, expose as much skin as possible. Minimal clothing is recommended — more skin exposure allows for greater light coverage.

Recommended Protocol

General guidelines:

• Stay within the manufacturer’s recommended distance
• Consistency is more important than intensity
• More time does not always produce better results

Does Red Light Therapy Generate Heat?

Very little. The primary mechanism is photobiomodulation — not heat production. You may feel mild warmth during treatment, but the therapeutic benefits come from cellular light absorption rather than thermal effects. Unlike infrared saunas, red light therapy does not significantly raise body temperature.

Common Mistakes to Avoid

• Overuse — longer sessions do not necessarily produce better results. Most users benefit from 10–20 minutes per treatment area.
• Incorrect distance — position yourself within the recommended range, typically 6–12 inches from the device.
• Inconsistent use — the greatest benefits come from regular use over time. Aim for at least 3–5 sessions weekly.

Safety Guidelines

Red light therapy is considered safe for most individuals. Consult your healthcare provider before use if you:

• Are pregnant or nursing
• Have a medical condition requiring supervision
• Have implanted medical devices or a pacemaker
• Take medications that increase light sensitivity

Photosensitizing medications: Certain antibiotics, acne medications, and anti-inflammatory medications may increase sensitivity to light. Consult your healthcare provider if you are taking prescription medications before beginning treatment.

What to Do After Your Session

No special recovery is required. After treatment:

• Continue your normal daily activities
• Hydrate as desired
• Apply moisturizer if preferred
• Avoid harsh skin treatments immediately afterward

Frequently Asked Questions

How far should I stand from the panel?

For most applications, position yourself approximately 6–12 inches from the panel. Closer distances increase light intensity; greater distances reduce energy delivery. If you’re new, begin at 12 inches and gradually move closer as desired.

Do I need eye protection?

For facial treatments, eye protection is recommended — wear the included protective goggles or keep your eyes closed. For body treatments, eye protection is optional but still recommended.

Can I use red light therapy every day?

Yes. Daily use is considered safe and commonly recommended for optimal results. Most research supports approximately 10–20 minutes per treatment area per day.

Will red light therapy improve my skin?

Yes. Red light wavelengths (630–660nm) stimulate collagen and elastin production, improving skin texture, tone, fine lines, and overall appearance. Most users notice visible improvements within 8–12 weeks of consistent use.

Can red light therapy help improve sleep?

Yes. Red and near-infrared light may support healthy circadian rhythms and natural melatonin production. Many users find evening sessions beneficial for relaxation and sleep quality.

Sleep protocol: 10–15 minutes, in the evening or 1–2 hours before bed.

Can I use red light therapy before bed?

Yes. Red light does not suppress melatonin production and can be part of an evening wind-down routine. Some individuals may find higher-intensity near-infrared exposure stimulating, so personal experimentation is encouraged.

Can red light therapy help with weight management or cellulite?

Red light therapy may support healthy metabolic function, improved circulation, reduced inflammation, and improved skin texture. While it is not a weight-loss treatment, some users report improved skin appearance and reduced visibility of cellulite when combined with healthy lifestyle habits.

Can I use red light therapy if I have metal implants or a pacemaker?

Red light does not generally interfere with metal implants. However, individuals with pacemakers, implanted medical devices, or significant medical conditions should consult their healthcare provider before beginning treatment.

Is red light therapy safe for children and teenagers?

Yes. Red light therapy is commonly used to support acne management, recovery from sports activities, and minor wound healing. Parental supervision and pediatrician approval are recommended for younger children.

How many joules or power density are needed for effective treatment?

For most applications:

• Energy dose: 4–20 J/cm² per session
• Power density: 30–100 mW/cm²

Optimal dosing varies based on the treatment goal and device specifications.

How do I know if my device is working?

Short-term signs: better sleep, improved recovery, reduced soreness, improved circulation.
Long-term signs: healthier skin appearance, improved skin texture, enhanced recovery capacity, hair growth support (when applicable).

Some benefits appear within days; others may require several weeks or months of consistent use.

Are expensive red light therapy devices worth it?

Device effectiveness depends primarily on wavelength accuracy, irradiance (power output), treatment area coverage, and build quality. Lower-cost devices can be effective but often require longer treatment times and closer positioning to achieve similar results to premium systems.

How long do red light therapy devices last?

High-quality LED devices typically provide 50,000+ hours of operation — several years of daily use with minimal maintenance. This makes red light therapy one of the most durable and cost-effective wellness technologies available.

Is red light therapy covered by insurance?

Coverage varies by provider and medical necessity. Most at-home wellness devices are not covered by insurance, but certain medically prescribed treatments may qualify. Contact your insurance provider directly to determine eligibility.

Ready to Start?

Explore our Core Light collection to find the right red light therapy system for your home or clinic. Or build a complete recovery system with our Core Recovery Bundles.

Have more questions? Contact our team or explore the full Core Biowellness Onboarding Guide.