From the Guidelines
Low-level laser therapy (LLLT) or photobiomodulation (PBM) can be beneficial for skin health, particularly in reducing inflammation, promoting healing, and improving skin appearance. The therapy uses low-wavelength light to stimulate collagen production, reduce inflammation, and promote healing. Typical treatments involve exposure to low-level laser or light (wavelengths of 630-700nm) for 10-20 minutes, 3-5 times weekly. Home devices are available, but professional treatments at dermatology clinics or spas may provide stronger results. For best outcomes, consistency is key—most people see improvements after 8-12 weeks of regular use. The therapy works by penetrating skin cells and stimulating mitochondria, which increases cellular energy production and triggers healing responses.
Some of the key benefits of LLLT or PBM for skin health include:
- Reducing wrinkles and fine lines
- Improving sun damage and hyperpigmentation
- Decreasing acne inflammation and preventing future breakouts
- Accelerating wound healing and reducing scar tissue
- Improving skin texture and tone
According to the British Association of Dermatologists and British Photodermatology Group guidelines for topical photodynamic therapy 2018 1, photodynamic therapy (PDT) has been shown to be effective in treating various skin conditions, including actinic keratosis, superficial basal cell carcinoma, and psoriasis. While the guidelines do not specifically address LLLT or PBM, they do provide evidence for the use of light-based therapies in treating skin conditions.
It is essential to note that results may vary between individuals, and LLLT or PBM works best as part of a comprehensive skincare routine rather than as a standalone treatment. Additionally, the safety and efficacy of LLLT or PBM can depend on the specific device and treatment protocol used, as well as the individual's skin type and condition. Therefore, it is crucial to consult with a dermatologist or healthcare professional before starting LLLT or PBM treatments.
From the Research
Benefits of Low-Level Laser Therapy (LLLT) or Photobiomodulation (PBM) for Skin Health
- LLLT has been shown to stimulate collagen and elastin production, which can help to improve skin health and reduce the appearance of wrinkles 2, 3.
- The use of red and near-infrared lights has been found to increase the production of collagen and elastin, as well as improve skin elasticity and firmness 2.
- LLLT has also been shown to be effective in improving the appearance of facial wrinkles, with one study finding that treatment with 660 nm LEDs significantly improved periocular wrinkles 3.
- In addition to its anti-aging benefits, LLLT has also been used to treat a range of skin conditions, including acne, psoriasis, and vitiligo 4, 5.
Safety of LLLT for Skin Health
- Studies have shown that LLLT is generally safe and well-tolerated, with few adverse effects reported 6.
- One study found that high fluence LED-RL was safe up to 320 J/cm2 for skin of color and 480 J/cm2 for non-Hispanic Caucasian individuals, with no serious adverse effects reported 6.
- However, it is important to note that LLLT can cause transient erythema and hyperpigmentation, and that darker skin may be more photosensitive to LLLT 6.
Mechanisms of LLLT for Skin Health
- LLLT is thought to work by stimulating the production of collagen and elastin, as well as improving skin elasticity and firmness 2, 3.
- The use of red and near-infrared lights has been found to increase the production of adenosine triphosphate (ATP), which can help to improve skin health and reduce the appearance of wrinkles 2, 5.
- LLLT has also been shown to activate stem cells, allowing for increased tissue repair and healing 5.