Red Light Therapy for Scars: Improving Texture, Tone, and Recovery

Red light therapy (commonly referred to as RLT) may help improve the appearance of certain scars by supporting the body’s natural healing and remodeling processes. Research suggests red and near-infrared light can help regulate inflammation, support tissue repair, improve blood circulation, and influence collagen remodeling, which may help reduce scar thickness, redness, stiffness, and overall visibility over time.

While red light therapy is not a scar eraser, growing evidence suggests it may help scars heal and remodel more effectively. Results can vary depending on the type of scar, its age, and the treatment protocol used, but studies have reported improvements in surgical scars, burn scars, hypertrophic scars, and other forms of scar tissue. In general, newer scars appear to respond better than older scars, particularly when treatment is started during the active healing and remodeling phases.

Here’s what the research actually shows:

• Red and near-infrared light may improve scar appearance, thickness, and elasticity. A 2026 scoping review found improvements in burn scars, hypertrophic scars, and post-surgical scars, including reductions in scar thickness and improvements in pigmentation, elasticity, and overall scar assessment scores.

• Photobiomodulation appears most effective during active scar remodeling. Multiple studies found greater benefits in newer scars, particularly those less than 12 months old, suggesting timing may play an important role in treatment outcomes.

• Near-infrared light may support the healing processes involved in scar formation. A meta-analysis of 56 clinical trials found that near-infrared therapy significantly improved post-surgical wound healing outcomes and reduced post-operative pain, suggesting it may help support the tissue repair processes that influence how scars develop.

• Low-level laser therapy (LLLT) ranks among the most effective light-based approaches for surgical scar management. A network meta-analysis found low-level laser therapy performed comparably to pulsed dye laser, a commonly used dermatology treatment for scar reduction.

• Red light therapy may help reduce scar-related symptoms. Clinical studies have reported improvements in scar thickness, hardness, flexibility, itching, and discomfort, particularly in post-surgical and hypertrophic scars.

• Red light therapy appears safe and well tolerated. Across clinical studies, side effects were generally mild and temporary, with occasional redness or warmth at the treatment site. 

At Novaalab, our red light therapy devices are designed with the red and near-infrared wavelengths most commonly studied for photobiomodulation, tissue repair, and skin recovery. Below, we’ll explore how red light therapy for scars works, what the research says about its effectiveness, how to use it properly, and which devices may be best for different types of scars.

Red Light Therapy for Scar Healing at a Glance

Red light therapy may help improve the appearance of certain scars by supporting the body’s natural healing and remodeling processes. Research suggests it may help reduce scar thickness, redness, stiffness, and discomfort while supporting tissue repair and collagen remodeling over time. While results vary depending on the type and age of the scar, red light therapy appears to be most effective when used consistently and during the earlier stages of scar formation.

Different Types of Scars and How They May Respond to Red Light Therapy

Not all scars form the same way, and not all scars respond to treatment the same way. Factors such as the cause of the scar, its age, its depth, and the amount of collagen remodeling taking place can all influence treatment outcomes. In general, newer scars often respond better because they are still actively remodeling, whereas older scars have typically reached a more stable state. While some mature scars may still improve over time, research suggests red light therapy may be most effective during the earlier stages of scar formation and healing.

Red light therapy is often best viewed as part of a broader scar-management plan rather than a stand-alone treatment. Depending on the type and severity of the scar, clinicians may recommend combining photobiomodulation with established approaches such as silicone gel or silicone sheets for hypertrophic scars, scar massage, compression garments for certain burn scars, or procedures like laser therapy or microneedling. While research specifically evaluating these combinations is still limited, addressing scar remodeling through multiple complementary approaches may provide greater overall improvement.

Scars form when the body repairs damaged skin by producing new collagen fibers. In healthy skin, collagen is organized in a flexible basketweave pattern that allows the skin to stretch and move normally. 

During wound healing, however, the body prioritizes repairing the injury as quickly as possible. This rapid repair process often produces collagen fibers that are more densely packed and arranged in parallel bundles rather than the organized structure found in healthy skin. As a result, scar tissue may appear thicker, stiffer, raised, discolored, or less flexible than the surrounding skin.

One theme that appears consistently throughout the research is that timing matters. A 2025 scoping review of red and near-infrared photobiomodulation found the greatest improvements were often seen in scars that were less than 12 months old and still undergoing active remodeling. During this period, collagen fibers are continuing to reorganize and mature, which may make the tissue more responsive to treatments that influence inflammation, cellular activity, and collagen remodeling. Older scars may still improve, but changes often occur more gradually.

It’s also important to recognize that red light therapy works differently than procedures such as laser resurfacing, chemical peels, or microneedling. Rather than removing scar tissue, red light therapy appears to support the body’s natural repair and remodeling processes. Researchers believe these effects may help regulate inflammation, support fibroblast activity, and encourage healthier collagen organization as scars mature, potentially helping them become flatter, softer, and less noticeable over time.

How Red Light Therapy Supports Scar Healing

Red light therapy may help scars heal and remodel more effectively by supporting several biological processes involved in wound healing, including collagen remodeling, inflammation regulation, cellular energy production, and tissue repair. Rather than removing scar tissue directly, red and near-infrared light appear to help create conditions that support healthier healing and scar maturation over time.

May Support Collagen and Elastin Remodeling

One of the most important ways red light therapy may influence scars is by supporting collagen remodeling and elastin production. Scar tissue forms when fibroblasts produce collagen to repair damaged skin, but the collagen fibers in scars are often arranged differently than those found in healthy tissue. This disorganized collagen structure can contribute to raised, stiff, uneven, or highly visible scars.

Research suggests photobiomodulation may influence fibroblast activity and support the ongoing remodeling process that occurs as scars mature. A 2025 scoping review of burn, hypertrophic, and post-surgical scars found improvements in scar thickness, elasticity, pigmentation, and overall scar quality following treatment with red and near-infrared light. Researchers suggested these improvements may be related to changes in scar remodeling and tissue maturation over time.

May Support Wound Healing and Tissue Repair

Red light therapy may help support wound healing by increasing cellular energy production. When red and near-infrared light are absorbed by the mitochondria, they stimulate the production of adenosine triphosphate (ATP), the primary energy source cells use to repair tissue, produce proteins, and support recovery. This process may help healing tissues function more efficiently during the repair process.

A 2026 systematic review and meta-analysis of 56 clinical trials found that near-infrared light therapy significantly improved post-surgical wound healing outcomes compared to standard care alone. Researchers also reported meaningful reductions in post-operative pain, suggesting that photobiomodulation may support both healing and recovery following tissue injury.

May Help Improve Scar Appearance and Comfort

The combined effects of improved healing, inflammation regulation, circulation, and collagen remodeling may contribute to visible improvements in scar quality over time. Clinical studies evaluating red light therapy have reported improvements in scar thickness, hardness, elasticity, pigmentation, itching, pain, and overall appearance.

For example, the 2025 scoping review found that red and near-infrared photobiomodulation improved multiple scar assessment measures across burn scars, hypertrophic scars, and post-surgical scars. Researchers also reported reductions in scar-related pain and itching, suggesting that red light therapy may improve not only how scars look but also how they feel as they mature.

May Help Regulate Inflammation

Inflammation is a normal and necessary part of wound healing, but excessive or prolonged inflammation can contribute to abnormal scar formation, persistent redness, discomfort, and changes in skin texture. Red light therapy may help support a more balanced healing response by influencing inflammatory signaling pathways and reducing oxidative stress within damaged tissues.

A 2024 mice study investigating visible light and scar formation found that red light influenced STAT3 signaling, a pathway involved in wound healing, inflammation, and tissue repair. Researchers observed faster wound healing in treated tissues and concluded that light-based therapies may help regulate biological processes that influence how scars ultimately form.

May Improve Blood Circulation and Nutrient Delivery

Red light therapy may support healthy circulation by stimulating the release of nitric oxide, a signaling molecule that helps blood vessels relax and widen. Improved circulation can increase the delivery of oxygen, nutrients, growth factors, and immune cells to healing tissues, all of which play important roles in tissue repair and recovery.

While circulation alone does not reduce scars, it may help create an environment that supports more efficient healing. Researchers believe improved blood flow is one of several mechanisms through which red and near-infrared light help support tissue repair, collagen remodeling, and overall scar recovery.

How to Use Red Light Therapy for Scars

Red light therapy works best when used consistently over time. While treatment protocols vary between studies, most research on scar healing uses regular sessions over several weeks or months to support the body’s natural healing and remodeling processes. The exact frequency and duration may vary depending on the type, size, and age of the scar.

When using red light therapy for scars, keep the following guidelines in mind:

• Wait until the wound has closed. Red light therapy is generally most appropriate after the skin has closed and the initial healing process is underway. If you’re recovering from surgery, a burn, or another significant injury, follow your healthcare provider’s recommendations regarding when to begin treatment.

• Start as early as practical. Research suggests newer scars often respond better than older scars. A 2025 review found greater improvements in scars that were less than 12 months old, suggesting photobiomodulation may be most effective during the active remodeling phase of healing.

• Use it consistently. Most clinical studies evaluating scar healing used multiple treatments per week over extended periods. For most people, using red light therapy approximately 3 to 5 times per week is a reasonable starting point.

• Aim for 10-to-20-minute sessions. Session length depends on the device and treatment area, but many at-home devices are designed for treatments lasting roughly 10 to 20 minutes. Always follow the manufacturer’s instructions for your specific device.

• Avoid overdoing it. More light is not always better. Photobiomodulation research often demonstrates a biphasic dose response, meaning moderate doses may produce better results than excessively long or frequent sessions.

• Be patient with the process. Scar remodeling is slow and can continue for months after an injury or procedure. While some people may notice early improvements in redness or comfort within several weeks, more visible changes in scar texture, flexibility, and appearance often require several months of consistent use.

• Choose the right device for the treatment area. Larger scars may benefit from a device such as the Novaa Light Pad, while facial scars and acne scars may be better suited to the Novaa Glow Therapy Mask. For smaller scars or targeted treatment areas, the Novaa Light Switch can provide a more focused approach.

Red Light Therapy Results Timeline for Scars

Scar remodeling takes time, and results from red light therapy are typically gradual rather than immediate. While some people notice improvements in redness, comfort, or skin quality within a few weeks, more significant changes in scar texture, flexibility, and appearance often require several months of consistent treatment. Factors such as scar type, scar age, treatment frequency, and overall skin health can all influence the timeline.

Remember that red light therapy is not designed to erase scars overnight. Most clinical studies evaluating scar outcomes measured results several months after treatment began, reflecting the reality that scar remodeling is a slow biological process. Consistent use and realistic expectations are often key to achieving the best possible outcome.

Red Light Therapy vs. Other Scar Treatments

Red light therapy is one of several options available for scar management, but it works differently than many traditional scar treatments. Rather than removing scar tissue or resurfacing the skin, red light therapy supports the body’s natural healing and remodeling processes. Depending on the type, age, and severity of the scar, it may be used on its own or alongside other treatments recommended by a dermatologist or healthcare provider.

Each treatment has advantages and limitations. Silicone sheets are often recommended for post-surgical and hypertrophic scars, while microneedling and laser resurfacing are commonly used for acne scars and texture concerns. Chemical peels may help address discoloration and hyperpigmentation but generally have less impact on deeper scar tissue.

One advantage of red light therapy is that it is non-invasive, requires no downtime, and can be used consistently at home. While it may not produce the dramatic results associated with more aggressive procedures, research suggests it may help support scar healing, tissue repair, and remodeling over time. Because of this, some people use red light therapy alongside treatments such as silicone sheets, microneedling, or dermatologist-guided procedures as part of a broader scar-management plan.

Safety and When to Consult a Healthcare Provider

Red light therapy is generally considered safe and well tolerated when used as directed. Clinical studies evaluating red and near-infrared photobiomodulation for wound healing and scar management have reported few side effects, with most being mild and temporary.

Some people may experience temporary redness, warmth, or mild skin sensitivity after treatment. These effects typically resolve quickly and are often related to treatment duration, intensity, or individual skin sensitivity.

Consider speaking with a healthcare provider or dermatologist before beginning treatment if:

• You have an open wound, active infection, or wound that has not fully closed.

• You recently underwent surgery and are unsure when it is appropriate to begin treatment.

• You have a history of keloid scarring or abnormal wound healing.

• You are treating a severe burn or extensive scar.

• You have a medical condition or take medications that increase light sensitivity.

• Your scar is painful, rapidly changing, or causing functional limitations.

It’s also important to have realistic expectations. While research suggests red light therapy may help improve scar appearance, texture, flexibility, and comfort, it is not designed to completely remove scars. Individuals with severe scarring, extensive keloids, or significant cosmetic concerns may benefit from working with a dermatologist to explore additional treatment options such as silicone therapy, microneedling, laser treatments, or other specialized procedures.

Which Red Light Therapy Device Is Best for Scars?

The best red light therapy device for scars depends largely on the size, location, and type of scar you’re treating. Larger scars often benefit from devices that can cover more surface area at once, while facial scars and smaller treatment areas may be better suited to more targeted devices.

The most important factor is choosing a device you’ll use consistently. Because scar remodeling is a gradual process, regular treatments over weeks and months are often more important than any single session. Selecting a device that fits your scar type, treatment area, and lifestyle can help make long-term consistency easier.

Novaa Light Pad for Larger Scars and Treatment Areas

The Novaa Light Pad may be the best choice for larger scars located on the body, including surgical scars, burn scars, and stretch marks. Its flexible design allows it to conform to different parts of the body while delivering red and near-infrared light across a larger treatment area. This makes it particularly useful for individuals who want to treat scars on the abdomen, chest, back, arms, or legs without having to reposition a smaller device multiple times during a session.

Novaa Glow Therapy Mask for Acne Scars and Facial Scars

The Novaa Glow Therapy Mask is specifically designed for facial treatments and may be particularly appealing for individuals dealing with acne scars, post-inflammatory hyperpigmentation, uneven skin texture, or other facial skin concerns. In addition to supporting scar remodeling, regular red light therapy may help support overall skin health, collagen production, and skin rejuvenation, making it a versatile option for those looking to address multiple cosmetic concerns at the same time.

Novaa Light Switch for Targeted Scar Treatment

The Novaa Light Switch offers a more focused approach for treating smaller scars and specific problem areas. Its compact design makes it easy to target individual scars without treating a larger area than necessary. This can make it a practical option for smaller surgical scars, isolated acne scars, or individuals looking for a portable device that can be incorporated into an existing skincare or recovery routine.

Helping Scars Heal and Remodel More Effectively

Red light therapy is a non-invasive treatment that may help improve the appearance of certain scars by supporting the body’s natural healing and remodeling processes. Research suggests it may help regulate inflammation, support tissue repair, and promote collagen remodeling, which may contribute to improvements in scar texture, flexibility, pigmentation, and overall appearance over time.

While red light therapy is unlikely to completely remove scars, studies suggest it may be particularly beneficial for surgical scars, burn scars, hypertrophic scars, and newer scars that are still actively remodeling. As with most scar treatments, consistency and patience are important, as visible improvements often take weeks or months to develop.

If you’re looking for an at-home approach to support scar healing and skin recovery, Novaalab’s FDA-cleared red light therapy devices offer options for both larger treatment areas and more targeted concerns, helping you incorporate photobiomodulation into your routine with ease.