From the Research
Red light therapy is a non-invasive skin treatment that uses low-wavelength red light to improve skin health and appearance, with the most recent and highest quality study suggesting its efficacy in skin rejuvenation and acne treatment 1.
How it Works
Red light therapy works by exposing skin to concentrated red LED lights, which penetrate several millimeters into the skin where the light energy is absorbed by cells, particularly mitochondria. This stimulates cellular energy production (ATP), increases collagen production, reduces inflammation, and promotes healing.
Benefits and Treatment
The therapy can help reduce wrinkles, scars, and sun damage, improve skin tone and texture, and may benefit conditions like psoriasis and eczema. Typical treatments involve sitting or standing near a red light device for 10-20 minutes, 3-5 times weekly, with consistent use over 8-12 weeks generally needed for noticeable results. According to a systematic review and network meta-analysis, topical treatment combinations, chemical peels, and photochemical therapy (combined blue/red light) are most effective for mild-to-moderate acne, while topical treatment combinations, oral antibiotics combined with topical treatments, oral isotretinoin, and photodynamic therapy are most effective for moderate-to-severe acne 1.
Safety and Precautions
While generally considered safe with minimal side effects, results vary between individuals, and it's advisable to consult a dermatologist before starting treatment, especially for those with photosensitivity or taking medications that increase light sensitivity. A study on the application of red light therapy for moderate-to-severe acne vulgaris found that adverse events of the red light group were generally mild or even completely non-existent 2.
Key Points to Consider
- Red light therapy is a non-invasive treatment with minimal side effects
- It can improve skin health and appearance, reducing wrinkles, scars, and sun damage
- Typical treatments involve 10-20 minutes of exposure, 3-5 times weekly, for 8-12 weeks
- Consult a dermatologist before starting treatment, especially with photosensitivity or certain medications
- The most recent and highest quality study suggests its efficacy in skin rejuvenation and acne treatment 1