From the Guidelines
LED therapy, specifically red light and near-infrared light, can be effective for stimulating collagen production in the skin, although the current evidence is limited and more research is needed to fully understand its effects. The study by 1 mentions that there is a need for well-designed randomized, controlled, adequately powered studies with a longer follow up and ideally histological confirmation of clinical findings to determine the effectiveness of LED therapy on skin collagen. However, it does note that standard topical PDT and ALA-IPL appear effective in photorejuvenation, which may imply some benefit for collagen production.
Key Points to Consider
- The effectiveness of LED therapy on skin collagen varies by individual, with better results typically seen in those with mild to moderate skin concerns rather than severe photodamage.
- LED therapy works by stimulating cellular energy production (ATP) in skin cells, which enhances their function and repair capabilities, a process called photobiomodulation.
- The specific wavelengths of red light (630-700 nm wavelength) and near-infrared light (800-880 nm wavelength) are thought to penetrate the skin to different depths and can stimulate fibroblasts, the cells responsible for collagen production.
- Treatments typically require consistency, with sessions of 10-20 minutes several times per week for 4-12 weeks, followed by maintenance treatments.
Important Considerations
- Professional LED devices generally provide stronger results than at-home devices, though quality home devices can still be beneficial with regular use.
- LED therapy is generally safe with minimal side effects, making it an accessible option for collagen stimulation, though results develop gradually over time rather than immediately.
- More research is needed to fully understand the effects of LED therapy on skin collagen, particularly in terms of its long-term benefits and potential interactions with other skin treatments.
From the Research
Effectiveness of LED on Skin Collagen
- The study 2 found that low-level red plus near infrared LED light combination significantly increased collagen and elastin production in human skin, suggesting its potential as an effective treatment for photo-aged skin.
- Another study 3 demonstrated that polychromatic light treatment, including red and near-infrared LED, improved skin complexion, reduced fine lines and wrinkles, and increased intradermal collagen density.
- A review article 4 discussed the use of LED phototherapy for skin aging, highlighting its safety, non-invasiveness, and potential to stimulate collagen production and improve skin appearance.
- While not directly focused on LED, a study on microneedling 5 found that controlled dermal wounding and stimulation of the wound healing cascade enhanced collagen production, suggesting a potential synergistic effect when combined with LED therapy.
- However, a review on energy-based devices combination therapy for melasma 6 did not specifically address the effectiveness of LED on skin collagen, but highlighted the importance of combination therapies for achieving optimal results in skin rejuvenation.