Does Light Therapy Help With Scars?

Keywords: #scars,

January 6, 2024 1321 Views

Understanding Scars

different types of scars on skin

Scars. They are a natural part of the body’s remarkable ability to heal itself. Whether from an injury, surgery, burn, or acne, scars form as the skin repairs damaged tissue. While some people embrace their scars as unique markings, others may find them aesthetically bothersome or even emotionally distressing.

Types of Acne Scars

Scars form when the dermis, the deeper layer of skin responsible for collagen and elastin production, is damaged. As the body rushes to repair the wound, it sometimes produces collagen in a less organized fashion, leading to a scar that differs in texture and appearance from the surrounding skin.

Scarring is a complex process influenced by various factors, including:

  • Depth and size of the wound: Deeper and larger wounds are more likely to leave noticeable scars.
  • Location of the wound: Areas with high skin tension, such as the shoulders or chest, are prone to wider or more prominent scars.
  • Genetics: Some individuals are genetically predisposed to developing hypertrophic scars (raised scars) or keloids (overgrown scars).
  • Age: Younger skin tends to heal faster and with less scarring than older skin.

Exploring Light Therapy for Scars

While no treatment can completely erase a scar, advancements in dermatology have led to innovative approaches for minimizing their appearance and improving skin texture. Among these innovations is light therapy, a non-invasive treatment that harnesses the power of specific wavelengths of light to stimulate healing and regeneration at a cellular level.

light therapy on a scar with a handheld device

Light therapy encompasses a range of treatments that utilize different wavelengths of light, each with unique properties and therapeutic benefits. For scar reduction, the most commonly used types of light therapy include:

  • Red light therapy (RLT): Utilizes red and near-infrared light to penetrate deep into the skin, stimulating collagen production, reducing inflammation, and promoting cell regeneration.
  • Blue light therapy (BLT): Primarily used for acne treatment, blue light targets acne-causing bacteria and reduces inflammation, potentially preventing or minimizing the appearance of acne scars.
  • Intense pulsed light (IPL): A broader spectrum of light that can address various skin concerns, including pigmentation irregularities often associated with scars.

How Does Light Therapy Target Scars?

Light therapy works by delivering concentrated beams of light energy to the targeted area of the skin. These light waves are absorbed by chromophores, light-sensitive molecules within our cells, triggering a cascade of biochemical reactions that promote healing and regeneration.

light waves penetrating the skin and interacting with cells

Here’s a closer look at how different wavelengths of light target specific aspects of scar tissue:

  • Red light therapy: Red light penetrates deep into the dermis, stimulating fibroblasts, the cells responsible for collagen production. This increased collagen synthesis helps improve skin elasticity, reduce scar thickness, and minimize the appearance of fine lines and wrinkles around the scar. Red light also has anti-inflammatory properties, which can further aid in scar reduction by calming redness and swelling.
  • Blue light therapy: While primarily known for its antibacterial effects in acne treatment, blue light can also indirectly contribute to scar reduction by preventing new breakouts and minimizing inflammation.
  • Intense pulsed light (IPL): IPL targets melanin, the pigment responsible for skin color. By breaking down excess melanin, IPL can help fade hyperpigmentation, such as redness or brown spots, often associated with scars.

Red Light Therapy for Scars: A Deeper Dive

red light therapy on scar

Red light therapy has emerged as a promising treatment option for various types of scars, including:

  • Hypertrophic scars: Raised scars that remain within the boundaries of the original wound.
  • Atrophic scars: Depressed or pitted scars often caused by acne or chickenpox.
  • Surgical scars: Scars resulting from surgical incisions.
  • Burn scars: Scars caused by burns, which can vary in severity and appearance.

Red light therapy’s effectiveness in scar reduction is attributed to its multi-faceted approach:

  • Collagen stimulation: Red light promotes the production of new collagen, improving skin elasticity and reducing scar thickness.
  • Inflammation reduction: Red light has anti-inflammatory properties, calming redness, swelling, and discomfort associated with scars.
  • Improved blood circulation: Red light therapy can enhance blood flow to the treated area, delivering essential nutrients and oxygen to support healing and regeneration.
  • Reduced pigmentation: While not as targeted as IPL for pigmentation, red light therapy may help reduce redness and promote a more even skin tone.

What the Research Says: Examining the Evidence

Numerous studies have investigated the efficacy of red light therapy for scar reduction, with promising results.

  • A 2014 study investigated the effectiveness of combining red light therapy with fractional laser treatment for improving the appearance of acne scars. The study found that this combination treatment significantly improved the appearance of acne scars compared to laser treatment alone [read more].
  • Softening of scars: Red light therapy has been found to be effective in softening the appearance and texture of hypertrophic scars, which are commonly seen after surgeries or accidental injuries [read more].
  • Relief from itching and pain: Red light therapy can help alleviate itching and pain commonly experienced with surgical scars [read more].

While more research is warranted to determine long-term effects and optimal treatment protocols, the existing evidence suggests that red light therapy can be a safe and effective adjunct therapy for scar reduction.

Red Light Therapy For Scars before and after

At-Home vs. Professional Treatments

The increasing popularity of light therapy has led to a surge in at-home devices, making this treatment more accessible than ever. However, it’s essential to understand the differences between at-home and professional light therapy for scar reduction.

At-Home Devices:

  • Pros: Convenience, affordability, ease of use.
  • Cons: Lower power output, may require more frequent or longer treatment sessions, results may vary depending on device quality.

Professional Treatments:

  • Pros: Higher power output, targeted treatment plans tailored to individual needs, supervised by trained professionals, may yield faster or more dramatic results.
  • Cons: More expensive, requires scheduling appointments, may not be suitable for everyone.

Ultimately, the best approach depends on individual needs, scar type, budget, and desired outcomes. Consulting with a board-certified dermatologist is crucial to determine the most appropriate treatment plan.


Scars, though a testament to the body’s incredible healing capabilities, can sometimes impact self-esteem and confidence. Light therapy, particularly red light therapy, offers a promising avenue for minimizing scar appearance and promoting healthier-looking skin.

While not a magic eraser, light therapy, when used correctly and consistently, can stimulate collagen production, reduce inflammation, and improve skin texture, leading to a significant reduction in scar visibility.

As with any medical or aesthetic treatment, consulting with a qualified dermatologist is paramount. They can assess your individual needs, scar type, and medical history to determine if light therapy is the right approach for you and recommend the most effective treatment plan to help you achieve your desired outcome.