Class IV Laser Therapy vs. Red Light Therapy: What’s the Difference?

Apr 21, 2026

If you’ve been researching treatment options for pain relief, injury recovery, or inflammation, you’ve probably come across both Class IV laser therapy and red light therapy. While they may sound similar, they are very different in power, depth, and clinical effectiveness.

At Arvada Sports and Spine Group, we use advanced Class IV laser therapy because it delivers faster, deeper, and more targeted healing compared to standard red light treatments.

Let’s break it down so you can understand which option is right for you.

What Do These Therapies Have in Common?

Both therapies fall under something called photobiomodulation, a process where light energy stimulates your cells to heal, reduce inflammation, and improve circulation.

But that’s where the similarities end.

What Is Red Light Therapy?

Red light therapy (RLT) uses low-level LED lights in the red or near-infrared spectrum.

Key Features:

Uses LED light (not lasers)
Low intensity and dispersed light
Penetrates only a few millimeters into the skin
Typically used in spas, gyms, or at home

Common Uses:

Skin rejuvenation (wrinkles, acne, scars)
Mild inflammation
Circulation support
General wellness and recovery

Think of red light therapy as surface-level support, great for skin and mild conditions, but limited for deeper injuries.

What Is Class IV Laser Therapy?

Class IV laser therapy is a medical-grade, high-powered treatment performed in a clinical setting.

Key Features:

Uses a focused, high-intensity laser beam
Delivers energy deep into tissue (up to several inches)
Requires trained providers for safe and effective use
Targets muscles, joints, nerves, and connective tissue

Clinical Benefits:

Accelerates tissue repair and healing
Reduces inflammation and swelling
Improves circulation and oxygen delivery
Decreases pain by affecting nerve signaling

This is why Class IV laser is commonly used in physical therapy, chiropractic care, and sports medicine.

The Biggest Differences (Side-by-Side)

Feature	Red Light Therapy	Class IV Laser Therapy
Light Source	LED (scattered light)	Focused medical laser
Power	Low	High
Depth	Skin-level	Deep tissues (muscles, joints)
Best For	Skin, wellness	Pain, injuries, recovery
Setting	Home/spa	Clinical setting
Results	Gradual	Faster, targeted

Why We Use Class IV Laser in Our Office

At Arvada Sports and Spine Group, our goal is to treat the root cause, not just symptoms.

Class IV laser therapy allows us to:

Reach deep injuries that other therapies can’t
Speed up recovery for active patients
Reduce reliance on medications
Enhance results when combined with physical therapy for injury recovery, chiropractic care for pain relief, and massage therapy for muscle recovery

IMPORTANT: This makes it especially effective for:

Back and neck pain
Sports injuries
Tendonitis and ligament injuries
Post-surgical recovery

Which One Is Better?

Here’s the honest answer:

Red light therapy = great for surface-level and wellness use
Class IV laser therapy = best for true injury recovery and pain relief

Because of its higher power and deeper penetration, Class IV laser therapy is generally more effective for musculoskeletal conditions.

Final Thoughts

Not all light therapy is created equal.

While red light therapy can be a helpful wellness tool, Class IV laser therapy is a powerful, clinically proven treatment designed to help you heal faster, move better, and get back to doing what you love.

Ready to experience the difference?
Schedule a consultation at Arvada Sports and Spine Group and see if Class IV laser therapy in Arvada is right for you.