Blue LED light is a very short, high-energy wavelength (470 nm) that penetrates the skin between 0.07 to 1 mm. This means that it penetrates the outer layer of the skin and that is why here are 5 benefits of this light therapy.
Some studies suggest that blue light therapy may have anti-cancer properties and an inhibitory effect on cell growth. This is a recent finding, and it had to be studied more deeply. However, these are promising results that may bring important benefits to our skin.
Effective treatment of mild to moderate acne
These wavelengths effectively kill acne-causing bacteria on the skin’s surface. Interestingly, acne-causing bacteria emit a photosensitizer which makes them exceptionally sensitive to light and vulnerable to damage by specific wavelengths. Blue light treatments work best on acne when combined with red and near-infrared (NIR) therapy.
Stimulates blood flow
Treatments using blue light stimulated the release of nitric oxide (NO), a vasodilator, i.e. it opens the blood vessels. This is why blue light significantly decreased the size of the wound after a week of treatment.
Haemoglobin shows exceptional absorption of wavelengths shorter than 600 nm. This suggests that blue light can support oxygen transport in the body since hemoglobin and melanin transport oxygen, immune system substances, and nutrients throughout the body and wounds, allowing them to heal faster.
It reduces skin infections
Scientists explain that the wavelength range of 402–420 nanometres has the most effective antimicrobial spectral range. Blue Skin Light is lethal to many species of bacteria and fungi.
Moreover, blue light suppresses the cells that cause inflammation in the skin. Over a period of several sessions, these cells calm down, and the physical symptoms become much less visible. Therefore, it is an effective treatment for eczema, psoriasis, and other chronic inflammatory skin diseases.
Contributes to the circadian rhythm
These wavelengths are easily absorbed by our light-sensitive retinas, which is the key to one of the most important functions of blue light: helping to regulate your circadian rhythm. These are physical, mental, and behavioral changes that follow a 24-hour cycle and primarily respond to light and dark.
All colors of the rainbow affect the sleep-wake cycle, but none more so than blue light. When blue light interacts with photoreceptors in the eyes, it sends a signal to “wake up,” increasing alertness as well as mental sharpness.
Humans are programmed to feel a burst of energy in the morning. Therefore, altering this natural rhythm can importantly affect our health, which will be reflected in the skin among other consequences.