Even though cancer is not considered a valid concern, there are some other risks associated with UV light teeth whitening. UV instruments are powerful and applying the light for too long or directing it in the wrong spot can damage soft tissues. It can cause sensitivity or even mild burns on the lips, gums, or tongue.
On the other hand, visible light is the part of the light spectrum that is, well, visible. We can see it! Most of us can see wavelengths between about 380 and 700 nm.And blue light is exactly that

Sun exposure causes wrinkles, collagen loss and increased pigmentation. Red Light Therapy can reverse photodamage from UV rays. It can soften the skin’s texture, increase collagen and elastin, and even out the skin’s tone. There is one exception, in that people with pigmentation issues might need to avoid infrared light in certain areas.

LEDs produce only visible light and heat. There are no studies with conclusive evidence to support a causal relationship that exposure to any of these will cause cancer. The biggest concern about LED lighting is the possible effects of blue light (not ultraviolet) emitted by LEDs. White LEDs are actually blue LEDs coated with a yellow phosphor.
The reason why artificial light at night may cause cancer is likely due to shutting down natural melatonin production in the body. As a result, blue light at night disrupts natural circadian rhythms, sleep, and hormonal balance. Thus, the hormonally triggered cancers, like breast and prostate cancer, seem to be especially susceptible to Infrared heaters cannot cause sunburn. Sunburn is caused by UV light: a type of radiation different from infrared. Infrared heaters only emit far infrared, which does not cause sunburn or even a tan. The sun emits both infrared and UV light. Therefore, the sun can cause a tan or burn while infrared heaters cannot.
A close reading of exposure limits indicate that a 5 mW laser could cause eye damage. 670 nm red light is only 3 percent as bright. is that a regular pointer laser can overwhelm the eye
Can Red Light Therapy Help Treat Cancer? While red light therapy supports the health of normal cells, some studies suggest it has a devastating effect on malignant cells. A 2022 study showed that LED red light therapy inhibits the proliferation of melanoma cells. These researchers used red light to irradiate melanoma cells in vitro and in
January 20, 2023 at 8:12 p.m. EST. A new study shows long wavelengths of ultraviolet light from nail dryers could damage DNA and cause mutations in human cells that increase risks for skin cancer
Red light therapy—also known as red LED light therapy, low-level light therapy (LLLT), photobiomodulation, and cold laser therapy—involves exposing the skin to red and near-infrared light between the wavelengths of 660 nm and 890 nm with either low-level lasers or red LED lights. And they're thought to be absorbed by skin up to 10 millimeters.
The new study, completed in an animal model, examined the effectiveness of both near-infrared and red LED light at improving the healing of skin damage during radiation therapy. Without

Phototherapy is a process that uses a specific type of light to kill acne-causing bacteria and make your skin less oily. It is remarkably effective in treating blemishes unresponsive to other treatments. Doctors once used UV radiation from the sun to treat acne. However, while it can clear up acne, it can also cause skin cancer .

Essentially, the larger and brighter an LED light source is, the more dangerous it could be if you stare directly into it. The light from LEDs is not emitted in 360 degrees like other bulbs; the concentration of direction makes these lights more powerful, and therefore potentially more dangerous. Different LED colors are actually more damaging
LED red light has been reported to have many health benefits. The present study was conducted to characterise anti-proliferation properties of four LED red light wavelengths (615, 630, 660 and 730 nm) against non-triple negative (MCF-7) and triple negative (MDA-MB-231) breast cancer-origin cell line …
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