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Incandescent vs LED Lights in Red Light Therapy
Red Light Therapy has been investigated in thousands of research studies over the last 50 years. Until the early 2000’s, most studies used lasers as the light source, but more recently, LED lights have become popular due to their affordability, safety, and ease of at-home use. LED lights are now widely used in Red Light Therapy devices, including the devices we make at Fringe. Other light sources, such as incandescent lights, are also sometimes promoted for use in Red Light Therapy, but it’s important to recognize that incandescent lights are not equivalent to LED’s when it comes to reaping the well-recognized benefits of this powerful healing modality. In this article, we’ll explore the characteristics of LED and incandescent lights, how the two light types can (and cannot) be used in Red Light Therapy, and what to look for in a Red Light Therapy device. Comparison of LED and Incandescent Lights LED lights have many important characteristics that are superior to incandescent lights, including: Characteristics LED Incandescent Energy Efficiency 80-90% more efficient than incandescent, as most energy is converted to light Very inefficient – 90 to 95% of energy is lost as heat, and only 5 to 10% is converted to light Lifespan 25,000 to 50,000 hours (10 to 25x longer than incandescent) 1,000 to 2,000 hours (needs frequent replacement Heat Output Minimal heat emission, stays cool to the touch High heat emission, can become too hot to touch Long-Term Cost Lower long-term cost due to energy savings and longer lifespan Higher long-term cost due to frequent replacements and high energy use Durability Shock-resistant, does not break easily Fragile, glass can break easily Environmental Impact Eco-friendly, no toxic materials, low energy consumption Higher energy use, shorter lifespan, increases waste There are also some areas where LED’s can be inferior to incandescent lights, including: Characteristics LED Incandescent Flicker Potential Some LEDs flicker which can cause eye strain No flicker; provides continuous, steady light EMF Emission May emit higher EMF’s due to electronic drivers Minimal EMF emission, since it does not use electronic drivers Blue Light Exposure Can be quite high Low, more natural warm light However, NONE of these characteristics are necessarily an issue with Red Light Therapy devices. Why we don’t NECESSARILY need to be concerned about these limitations (Flicker, EMF, Blue Light Exposure) with Red Light Therapy devices: Many Red Light Therapy devices do not flicker – a reputable company will demonstrate this using third party testing (we do!) EMF emission – it’s absolutely true that a LOT of Red Light Therapy devices emit way too many EMF’s, but they don’t have to. At Fringe, we’ve designed our panels so that the electronic driver is 3 feet away from the panel, so there is almost no EMF emission from the panel itself. Our wraps are battery powered; batteries create energy through chemical reactions, which generate negligeable EMF’s. Blue Light Exposure – Red Light Therapy devices contain red and near infrared LED’s, which don’t emit blue light (of course, blue light LED’s are also an option…!) What about Blue Light Therapy using LED’s? Isn’t blue light from LED lights harmful? This is true but isn’t the whole story. Blue light from devices like ipads, phones, etc. is found in a very narrow spectrum of wavelengths. This is “foreign” to our body, as it is different than the blue light that comes from the sun. In contrast, blue light used in Blue Light Therapy emits a wider spectrum of wavelengths that closely mimics the distribution of blue light in sunlight. This light spectrum has been found to be antimicrobial, which is why it is used for applications like acne. No matter what, though, it’s still important to avoid getting blue light in the eyes. Is light from an incandescent light the same as from an LED? Incandescent lights produce light in a “full spectrum”, including red and near (and also far) infrared light. This is what makes the light from incandescents “warm” in terms of color, and also generates a lot of heat, making them hot to the touch. It’s also why these lights are used for things like heating terrariums. In order to make an incandescent light exclusively red, a red film or coating is placed on the glass that filters out other colors allowing only the red (and sometimes infrared) wavelengths to pass through. The filament inside still produces other colors, but they’re mostly blocked by the coating. LED lights used in Red Light Therapy will produce light in the red (if using red diodes) or near infrared (if using near infrared diodes) spectrums. Many devices include both types of diode, and the type of light is produced by using a semiconductor material that naturally produces red or near infrared light. Red Light Therapy doesn’t use white LED lights like you would find in a house lamp. Red and near infrared light are the same in terms of wavelength no matter what the source. The difference is that incandescent lights produce full spectrum light and then block the other light from being emitted, while LED lights (red or near infrared) emit ONLY the light in that color spectrum. If the red and near infrared light is the same, can incandescent lights be used instead of LED’s in Red Light Therapy? Incandescent lights CAN be used to activate the eye to brain pathway that is responsible for some of the benefits of Red Light Therapy. In this pathway, photoreceptors in the retina are activated and influence the function of the suprachiasmatic nucleus in the brain. This helps regulate the circadian cycle and also has an influence on mood and stress hormones. These lights are great for lighting up a room. Incandescent lights CANNOT be used as easily as LED’s to activate the light to tissue pathway that is responsible for the majority of benefits of Red Light Therapy. In this pathway, light enters through the skin (or other tissue) and activates photoreceptors in cells, such as cytochrome c oxidase in mitochondria. To achieve this benefit, the skin/tissue has to be close (6 inches or less) away from the light source. Because incandescent lights get hot and are fragile, they aren’t a substitute for durable LED’s that don’t generate much heat. Incandescent bulbs also generate scattered light, which doesn’t allow for good skin/tissue penetration. There is limited research showing that under some circumstances, incandescent lights may activate this pathway, but their functional limitations do not make them a substitute for LED’s. Most of the benefits of Red Light Therapy (reduced inflammation, faster tissue healing, reduced oxidative stress) comes from the light to tissue pathway. Incandescent lights do not work to activate this pathway effectively. It’s also important to note that almost none of the benefits of Red Light Therapy that have been observed in thousands of research studies over the last 50 years used incandescent light, with most studies using laser or LED light. How do I know if my Red Light Therapy device is safe to use? Here are some things to look for: Use of red and near infrared light in evidence-based spectrums. Fringe Red Light Therapy devices use red light at 660nm and near infrared light at 850nm, which have been demonstrated in many research studies to be beneficial. No flicker Low to no EMF’s. Low irradiance (this is also called power or intensity. And yup, you want this low. A lot of companies are selling products that are quite high intensity, and this can potentially be harmful). Irradiance in the range of 20-40mW/cm2 mimics the sun, and has been shown in multiple research studies to be both safe and effective. A good company will prove these by sharing analyses done by third party testing. Why choose Fringe Red Light Therapy devices? We use evidence-backed wavelengths of red and near infrared light. Our devices are no flicker and generate low to no EMF’s. We use a safe and effective sun-like intensity of light, at between 20 and 40mW/cm2. All of our products are tested by an independent third party lab, and we share this analysis with our consumers. Our products are created by a team of medical professionals who carefully review and use published scientific evidence to inform how we manufacture. Take home message: Incandescent lights are a great option for lighting up a room, creating a warm and ambient red light that may have benefits related to activation of the eye to brain pathway which helps to regulate the circadian rhythm and mood. Incandescent lights cannot be used as a substitute for LED lights to activate the tissue to cell pathway that is responsible for benefits including reduced inflammation, decreased oxidative stress, and improved tissue healing. Of the thousands of research studies on Red Light Therapy, only a small number used incandescent lights, so their clinical efficacy has not been clearly demonstrated. High-quality Red Light Therapy devices will use both red and near infrared LED lights and will be no flicker, generate low to no EMFS, and deliver light at a sun-like intensity that is both safe and effective for everyone, including kids and pets.
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Light Therapy & Menopause
Menopause Menopause is the natural transition that occurs when a woman stops menstruating, which usually happens between the ages of 40 and 58. The term “transition” refers to a change from one state to another, which is a very apt descriptor for what happens during menopause. Hormonally speaking, menopause marks a shift to an entirely new hormonal milieu, which not surprisingly, can be quite challenging. Hormonal Changes During Menopause The hormonal changes that accompany menopause are dramatic. From perimenopause (the stage leading up to menopause) to post-menopause (the stage following menopause), levels of estrogen and progesterone drop to a fraction of their previous levels. This sharp decline is not linear, instead showing fluctuations that can create a whirlwind of physical and psychological symptoms. Levels of testosterone also decrease during this transition. The effects of menopause The effects of menopause on the brain and body are similarly dramatic. Although these vary widely between individuals, there are many common symptoms, including hot flashes, loss of libido, vaginal dryness, sleep issues, weight gain, dry skin, hair thinning, digestive changes, sexual dysfunction, urinary symptoms (including incontinence) and mood disturbances. Some menopausal symptoms are local, occurring mainly in the pelvic region, while others (such as hot flashes) are felt throughout the body. Similarly, some symptoms are transient while others cause persistent and long-term physical changes. The experience of menopausal symptoms is extremely common. Overall, it is estimated that 75-80% of women suffer from symptoms related to menopause, of which 20-30% are considered severe. Approximately 75% of women worldwide experience hot flashes, while 40-60% suffer from sleep issues. As many as 83% of women report experiencing vaginal dryness, often with associated pain during intercourse. Research has found that 9 in 10 women weren’t educated about menopause, and since talking about these symptoms has long been viewed as “taboo”, women often suffer menopause symptoms in silence, leaving them unable to access tools that might help to alleviate them. Improving access to supportive tools during menopause is a critical public health issue. This includes natural and alternative therapies, as well as novel tools such as light therapy. Light - including red, near infrared, and blue light – may help to alleviate several of the challenging symptoms of menopause, including sleep and mood issues, vaginal dryness and atrophy, hair loss, overactive bladder, sexual dysfunction, cognitive and digestive changes, and skin problems. Read on to learn how light therapy can be used to support women’s health during this important transitional period. Light therapy Before we can explore how light therapy can be used to support women’s health during menopause, we first need to answer the question: what is light therapy? The answer is really quite simple. Light therapy (also known as photobiomodulation) is the application of light with specific wavelengths to the body for the purposes of influencing biology. In theory, light therapy can use any wavelength of light, but the most commonly used are red, near infrared, and blue. The use of red and near infrared light is commonly referred to as “red light therapy”. All three wavelengths of light may be useful in supporting women during menopause, although red and near infrared light have the greatest utility. Research has shown that light therapy has many effects on a cellular level. Briefly, with red and/or near infrared light, the most notable observed effects include an increased production of cellular energy, reduced inflammation, decreased oxidative stress, decreased pain, increased blood flow, enhanced collagen and supportive tissue production, and improved microbiome health (gut and vagina). Blue light is mainly used to destroy pathogenic microorganisms like yeast and bacteria. Light Therapy & Menopause Given that there is such a wide range of menopausal symptoms (note that for simplicity, symptoms related to peri-, meno- and post-menopause are being considered here as “menopausal” symptoms), it is likely that the various physiological effects of light therapy will be more or less relevant for certain ones. For example, some of the changes seen during menopause – such as vaginal atrophy, dryness, and urinary incontinence - are due in part to a decrease in blood flow and loss of connective tissue in the pelvis. While specific research into using light therapy to treat these symptoms is still sparce, researchers have proposed that based on existing scientific evidence, red light therapy may alleviate these symptoms by stimulating the production of collagen and elastin, supporting bladder function, and enhancing blood flow. Many symptoms of menopause are also experienced in other states, and we can look to those conditions for clues regarding how to use light therapy to alleviate the same symptoms during menopause. This includes anxiety and depression, hair loss, sleep disturbances, acne, digestive issues, and infections. While research specific to these symptoms in menopausal women is lacking, there is clear evidence that light therapy (with red, near infrared, and/or blue light) can be helpful in other conditions, and we can extrapolate from there to the menopausal state. Based on the known physiological effects of light therapy, and the evidence of benefits in a range of clinical conditions, we propose that the use of red, near infrared, and/or blue light may help to alleviate several of the most common symptoms experienced by women during this life transition, including: Mood: Mood changes are a common experience during menopause, with many women reporting increases in anxiety and depression. Light therapy (with red and near infrared light) has been shown to reduce depressive symptoms in both humans and animals, likely due to improvements in mitochondrial function, increased brain blood flow, and decreased neuroinflammation. A 2009 clinical trial found a reduction in symptoms of depression and anxiety in as little as a single session. The effects of light therapy on mental health are so compelling that a recent systematic review concluded that it is “strongly recommended” as a treatment for moderate depressive disorder and is “recommended” for the treatment of anxiety disorder. Studies of red light therapy and depression often apply light therapy directly to the skull, while some use an intranasal approach. Cognition: Cognitive changes, such as memory loss, are also commonly experienced by women during menopause. Researchers have shown in a series of controlled clinical studies that near infrared light therapy improves cognition in young and middle-aged healthy adults when applied to the prefrontal cortex of the brain. Cognitive improvements were accompanied by changes in brain function, including increased brain blood flow. In 2019, a meta-analysis of all the research looking at the effects of light therapy (including near infrared light, or near infrared and red light in combination) found that the overall effect on cognition was positive, leading the authors to conclude that light therapy is a “cognitive-enhancing intervention in healthy individuals”. Hair Loss: Menopausal women frequently report hair loss and thinning. The ability of light therapy to induce hair growth was observed in studies conducted more than 50 years ago. Early clinical trials used primarily red light, and the effectiveness of these studies led to the development of several red light therapy devices for hair loss. Subsequent studies have shown that near infrared light also stimulates hair growth, with red and near infrared light improving hair growth in androgenetic alopecia, which is the most common type of hair loss that affects both men and women. Light impacts hair growth through effects on mitochondria, which lead to increases in the length of time the hair follicle spends in the growth phase. Overactive Bladder: Overactive bladder, involving a frequent urge to urinate, is a urinary symptom experienced during menopause. Overactive bladder often results in urinary incontinence. Although research related to light therapy and overactive bladder is limited, one study found that application of red light to the abdomen three times per day for 12 weeks resulted in a reduction of urinary incontinence as compared to a control group, suggesting a potential benefit in this condition. Skin Changes: During menopause, many women report skin changes, including acne, dryness, altered pigmentation and wrinkles. Light therapy has been widely used in spas and dermatology clinics for its effects on skin health, in addition to at-home use. Red and near infrared light is helpful in the treatment of wrinkles, psoriasis, acne, hyperpigmentation, and rosacea, while blue light is helpful in the treatment of acne. Studies show results such as smoother skin; wrinkle reduction and improved skin elasticity; and normalization of skin pigmentation. The effect of red light therapy on wrinkles can be quite dramatic, with one study showing a 30% decrease in eye wrinkle volume. Gut: Gut dysbiosis, involving changes in the gut microbiome, are common around the time of menopause. Estrogen is known to affect the gut microbiome and similarly, some of the microbes in the gut microbiome (called the estrobalome) are able to influence levels of estrogen in the body. Keeping the microbiome healthy during menopause is essential, and light therapy (with red and near infrared light) may provide some support. Animal research has shown that when red or near infrared light was applied to the abdomen of mice, the composition of the microbiome shifted to include more of a bacterial strain that is associated with better health. In humans, red and near infrared light applied to the abdomen of Parkinson’s disease patients modulated the composition of the gut microbiome, with a shift towards more “healthy” bacteria, and in a case report of a patient with breast cancer, application of near infrared light to the abdomen was associated with increased diversity of gut microbes, which is considered to be a healthy change Vaginal Dysbiosis: Similar to the gut, the vagina has a microbiome, and menopause can cause dysbiosis in this region as well. Hormone-induced dysbiosis can increase the vaginal pH and change the composition of the microbes, which is associated with bladder dysfunction and bladder pain syndrome. Light therapy, particularly with red and near infrared light, is proposed as being a positive modulator of the vaginal microbiome. There are several proposed mechanisms, including modulation of nitric oxide. Nitric oxide is important for the lactobacillus species that dominate in the vagina that are known to decrease during menopause. Sleep: As already mentioned, sleep disturbances are experienced by 40-60% of menopausal women. Light is a primary regulator of the body’s circadian rhythm, so it is not surprising that light therapy has effects on sleep. Application of red and near infrared light during wakefulness improves sleep quality in people with cognitive decline, Guillain-Barré Syndrome, fibromyalgia and stroke. When red light therapy is applied during sleep, there is an increased clearance of waste products from the brain and improved flow of cerebrospinal fluid, which are required for optimal brain health. Blue light triggers wakefulness, suppressing melatonin, so direct exposure of the eyes to blue light should be limited to daytime hours. Vaginal Infections: Vaginal infections with yeast and bacteria are more common during menopause due to the changes in estrogen, vaginal pH, and vaginal dryness that occur. In addition to their positive effects on the microbes in the gut and vagina, red and near infrared light have also been shown to have effects on pathogenic (harmful) microorganisms in the female pelvis. Red light has been shown to be helpful in treating vaginal candida, as has blue light. Specifically, blue light at 415nm (the same wavelength as in the Fringe Pelvic Wand) had the most potent anti-candida effects. Blue light has also been shown to be helpful in the treatment of vulvovaginitis. Vaginal Atrophy: Vaginal Atrophy, Dryness & Sexual Dysfunction: The loss of estrogen during menopause causes many changes to the integrity of tissues in the vagina. This results in tissue atrophy and dryness, which can cause great discomfort, especially during sex. The main structural connective tissues are collagen and elastin, which provide strength and flexibility to the vagina. These changes occur for a variety of reasons, including a decrease in blood flow which results from the loss of estrogen. Application of red and near infrared light is known to increase blood flow by increasing levels of nitric oxide. It has also been shown to increase the synthesis of collagen and other supportive connective tissue including elastin. Suggesting that red and near infrared light may help with tissue support and rejuvenation during menopause. Light Therapy Products for Menopause While early research on light therapy used primarily lasers, more recent research has found that LED’s can also be used, which also have the advantage of applying light to a larger area of the body as well as an improved safety profile. The use of LED in red/near infrared/blue light therapy devices has also greatly reduced the cost of treatment, making it something that can be done in the comfort of one’s own home. A wide range of products are available, each of which is uniquely suited to address specific needs. The four most useful light therapy products to address the symptoms of menopause are: Red light therapy panel Panels usually deliver red and near infrared light, ideally with the option to use separately or in combination. Panels can be used to treat most body parts, including the face, chest and back. They’re great for supporting sleep and mood, when light should be entering through the eyes. They can also support digestion when directed towards the skin of the abdomen, as well as the skin on the face. The Fringe Red Light Therapy Panel delivers both wavelengths of light at the same “sweet spot” intensity as the sun. shop our panel Red light therapy wraps Red Light Therapy Wraps deliver light directly to the skin and can be applied to specific body parts, such as the head and abdomen. They should also deliver both red and near infrared light. Wraps have the advantage of being cordless and very convenient to use. The Fringe Red Light Therapy Head Wrap delivers light to the head (including red and two wavelengths of near infrared light) and is ideally suited to support mood, cognition, and hair loss. The Fringe Red Light Therapy Wrap has a rectangular shape and can be applied to the abdomen to support bladder function and digestion. shop our wraps Light therapy face mask Like wraps, face masks deliver light directly to the skin but are specifically contoured to the face. Due to the antimicrobial effects of blue light, it should be included in face masks for the treatment of acne along with red and near infrared light. The Fringe Red Light Therapy Face Mask delivers all three wavelengths of light to support skin health, including acne, wrinkles, pigmentation, and more. shop the mask Light therapy pelvic wand Light therapy pelvic wands are inserted directly into the vagina, delivering light directly to the vaginal tissues that are affected by menopausal hormonal changes. The Fringe Light Therapy Wand delivers red, near infrared, and/or blue light to support blood flow and tissue rejuvenation, which may help alleviate vaginal dryness, atrophy, and sexual dysfunction. shop the wand To recap Menopause is a time of dramatic hormonal changes, which create uncomfortable symptoms for many women. Light therapy is a safe and effective tool that may be used to alleviate a wide range of menopausal symptoms in the comfort of one’s own home. Red and near infrared light provide support for symptoms including sleep and mood issues, cognitive changes, hair loss, gut and vaginal dysbiosis, skin problems, and vaginal tissue changes, while blue light may provide antimicrobial activity for menopausal acne and vaginal infections. Many different light therapy products are available - including panels, wraps, face masks, and pelvic wands – that provide light therapy support for different symptoms. Choose products that use LED lights to deliver red, infrared red, and blue light (where appropriate) at approximately the same intensity of the sun for best results. For more information about Fringe light products, go to: https://fringeheals.com/shop-all-products/
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Red Light Therapy for Anti Aging
Light therapy (also known as photobiomodulation) is the application of light with specific wavelengths to the body for the purposes of influencing biology. The most common form of light therapy uses red light, which is visible as the color red, and/or near infrared light, which is not visible but can be felt as heat. Blue light is also often used in light therapy for skin conditions. Different colors of light have different depths of skin penetration, with red light and near infrared light penetrating the deepest. Light therapy can support skin health in a variety of different ways. Through its effects on mitochondria, light therapy can increase cellular energy production and modulate oxidative stress. In the skin, this increased energy can be used to support normal processes such as collagen and elastin production. And by modulating ROS production and oxidative stress, there is a shift towards skin rejuvenation rather than skin breakdown. The anti-aging effects of light therapy are often referred to as “skin rejuvenation”. This includes outcomes like increased collagen synthesis, increased elastin production, extracellular matrix regeneration, regulation of oil production, and regulation of the pigment producing cells of the skin. Clinically, these manifest as reduced wrinkles, improved skin appearance, and improved skin pigmentation. Studies show results such as smoother skin, wrinkle reduction and improved skin elasticity, and normalization of skin pigmentation. The effect of red light therapy on wrinkles can be quite dramatic, with one study showing a 30% decrease in eye wrinkle volume. Most skin rejuvenation studies use both red and near infrared light. Importantly, the use of light therapy to regenerate skin is gentle and “non-ablative”, which means that it doesn’t harm the epidermis of the skin and require downtime for healing. This contrasts with many popular anti-aging treatments such as microneedling, chemical peels, and microdermabrasion, which stimulative collagen synthesis and improve appearance by damaging and resurfacing the outer layer of the skin. At Fringe, we view aging as something to be embraced and supported using natural therapies, which is why we developed the Fringe red light face mask. Our mask is hands free, wireless, and uses 234 hard working LED light chips to deliver red and near infrared light to the entire face. It also has the option to deliver blue light if blemishes are a problem. Use the healing power of light and treat yourself to healthy, radiant looking skin in the comfort of your own home! For more information about Fringe light products, go to: https://fringeheals.com/shop-all-products/
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Light Therapy for Acne
Red & Blue Light for Acne Red and near infrared light therapy is the application of artificially generated light in the red and near infrared spectral bands. Other forms of light therapy include light in the blue spectrum, which is often used in light therapy for skin conditions. Blue light has the shortest wavelength, red light is intermediate, and near infrared light wavelengths are the longest. Different colors of light have different depths of skin penetration, with red and near infrared penetrating the deepest. Blue light from light therapy devices mimics the blue light generated from the sun, without any harmful UV rays. In contrast, artificial blue light generated from electronic devices has different spectral properties and can be harmful to the skin. Red, near infrared, and blue light have all been found to effectively treat acne. Acne is a common skin condition, affecting nearly 10% of people worldwide. Prevalence is highest in adolescents, with up to 85% having acne at some time during this period. Acne is not only painful, but it can also have adverse effects on many aspects of life, including social, psychological, and economic. Since acne has been observed to respond positively to sun exposure, a variety of treatment approaches using light therapy have been used. Light therapy for acne is treated in a variety of ways. Molecules in the skin called porphyrins absorb blue light which has antimicrobial effects that kill the bacteria associated with acne. Red and near infrared light also have antimicrobial effects but work via a different mechanism. The longer light wavelengths also reduce the activity of sebaceous glands, which are responsible for oil production. Treatment with blue, red, and near infrared light has been found to effectively treat acne, especially when used in combination. The Fringe Red Light Face Mask delivers both red and near infrared light as well as blue light to support skin health, including the treatment of acne. Made of soft silicone and battery powered, the mask is comfortable to wear and easy to use. The mask has three modes of use, which can deliver blue, red, or red and near/infrared. These can be combined in sequence for exposure to multiple wavelengths. Our recommended treatment protocol of light therapy for acne is to use blue daily and follow this with red/near infrared 3 to 4 times per week. For more information about Fringe light products, go to: https://fringeheals.com/shop-all-products/
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