Red Light Therapy: Does It Really Work for Aging Skin?
- Jill Stetson
- Jun 8
- 4 min read
Repair, Rebuild
Red light therapy has become one of the most talked-about treatments in skincare—and for good reason. While it may seem like a recent trend, the science behind red light therapy dates back to the 1960s. Today, it is widely used in dermatology, aesthetics, sports medicine, and wellness.
But with so many devices now on the market, it's fair to ask: Does red light therapy really work, and is it right for you?
The answer is yes. But understanding what it can realistically do, and choosing the right device, is important.
What Is Red Light Therapy?
True red light therapy is a form of photobiomodulation (PBM), a process that uses specific wavelengths of low-level light to stimulate natural cellular activity.
Unlike lasers or high-energy light treatments, photobiomodulation works without generating significant heat or causing damage to the skin. Instead, the light penetrates the skin and is absorbed by the cells, helping them function more efficiently.
For skin rejuvenation and healthy aging, the most effective wavelengths are:
633 nanometers (red light)
830 nanometers (near-infrared light)
These wavelengths have been studied extensively for their ability to support skin health, healing, and collagen production.
How Does It Work?
When red and near-infrared light reach the cells, they stimulate the production of ATP (adenosine triphosphate)—the energy source that powers cellular function.
This increase in cellular energy helps support:
Collagen and elastin production
Improved circulation
Tissue repair and healing
Reduced inflammation
Overall skin rejuvenation
Near-infrared light can penetrate deeper into the tissue than visible red light, while red light primarily targets the skin itself. Together, they create a supportive environment for healthier, more resilient skin.
What Benefits Can You Expect?
Research suggests that consistent use of red light therapy may help:
Improve skin texture and tone
Reduce the appearance of fine lines and wrinkles
Support collagen remodeling
Promote wound healing
Calm inflammation
Improve overall skin vitality
It's important to understand that red light therapy is not a facelift in a box. The results are generally gradual and subtle rather than dramatic.
Think of it like a well-formulated skincare routine. Just as quality skincare ingredients help slow visible signs of aging over time, red light therapy can help support your skin's natural repair processes and maintain healthier skin as you age.
What About Other Light Colors?
Many devices advertise a rainbow of colors, each claiming unique benefits. While certain wavelengths do have specific uses, more colors do not necessarily mean better results.
For example:
Blue light is commonly used to help manage acne-causing bacteria and inflammation.
Amber light may be soothing for redness-prone or sensitive skin.
However, when the goal is collagen stimulation, skin rejuvenation, and healthy aging, red and near-infrared light remain the most important wavelengths.
Don't assume that a device with more colors or more lights will produce better anti-aging results.
What Should You Look for in a Device?
Not all red light devices are created equal.
If your goal is collagen support and skin rejuvenation, look for a device that includes:
633 nm red light
830 nm near-infrared light
Adequate energy output (irradiance), ideally around 100–105 mW/cm² at the treatment distance recommended by the manufacturer
It's also worth checking whether the device has received:
FDA Clearance (510(k))
Other documented safety and performance testing
FDA clearance does not mean the FDA has endorsed the device, but it does indicate the device has met specific regulatory requirements for safety and intended use.
Are There Any Risks?
Red light therapy is generally considered safe when used as directed.
However, it may not be appropriate for everyone. You should speak with your healthcare provider before using red light therapy if you:
Have a medical condition that causes light sensitivity
Take medications that increase photosensitivity
Have significant eye sensitivity
Have concerns about a specific health condition
Eye protection should always be used when recommended by the device manufacturer.
Do the Results Last?
Like exercise and skincare, red light therapy works best with consistency.
Most people begin noticing improvements after several weeks to a few months of regular use. If treatments are discontinued, the benefits gradually diminish because the skin continues to age and respond to environmental stressors.
For the best long-term results, combine red light therapy with:
A consistent skincare routine
Daily sunscreen use
Healthy lifestyle habits
Professional treatments when appropriate
How Can Red Light Therapy Fit Into Your Skincare Routine?
Red light therapy is best viewed as a supportive tool, not a replacement for good skincare.
A quality home care routine that focuses on Repair, Rebuild, and Protect will always be the foundation of healthy aging. Red light therapy can complement that routine by helping your skin function more efficiently and supporting its natural repair processes.
Follow the manufacturer's recommended treatment schedule and be patient. The goal isn't overnight transformation. The goal is healthier, stronger, more resilient skin over time.
The Bottom Line
Red light therapy is one of the more promising technologies available for supporting healthy aging and skin rejuvenation. The science is encouraging, and many people see improvements with consistent use.
The key is choosing a quality device, having realistic expectations, and remembering that healthy skin is built through daily habits, not a single treatment.
At SkinTrust, we believe aging beautifully isn't about fighting the aging process. It's about supporting your skin with the right tools, treatments, and habits so it can stay healthy, resilient, and vibrant for years to come.
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