The origin of anti-blue light
Anti-blue light skin care products With the launch of Estee Lauder’s anti-blue light eye cream, there has been a storm of “anti-blue light” in the market. However, everyone has different views on the hot topic of “anti-blue light”.
As early as 1966, Nell et al. found that blue light exposure can cause damage to retinal cells, leading to vision loss or even vision loss. At the 2010 International Light Association Annual Meeting, the world’s top optical experts unanimously pointed out that short-wave blue light has extremely high energy and can penetrate the lens directly to the retina. Blue light irradiating the retina will produce free radicals, and these free radicals will cause the death of retinal pigment epithelial cells. The death of epithelial cells will cause the light-sensitive cells to lack nutrients and cause visual damage, and these damages are irreversible.
In December 2017, Xia Aiting and Tian Yan from the Dermatology Department of the Air Force General Hospital of the Chinese People’s Liberation Army published the article “Research Progress on Blue Light Damage to Skin and Its Protective Agents” in the “Journal of Illuminating Engineering”, which made brands smell the blue light of skin care products. Protection opportunities.
To understand “anti-blue light”, we need to understand what kind of light blue light is and what harm it does.
So, what is Blu-ray?
Short-wave blue light is light with a wavelength between 400nm and 480nm and has relatively high energy. Here, I would like to point out that blue light is not all harmful blue light. What is really harmful is the blue light within 400 to 440 nanometers, and the blue light between 480 and 500 nanometers has the effect of adjusting biological rhythms, which affects sleep, mood, memory, etc. Related to this, it is beneficial to the human body.
High-energy blue light with a wavelength of 400~500 nanometers is commonly found in electronic devices such as computers, mobile phones, projectors, LED displays, laser pointers, etc. Blue light within this wavelength will increase the amount of toxins in the macular area of the eye, seriously threatening us. The health of the fundus of the eyes is the most harmful to the retina, and in the most serious cases, it can induce blinding eye diseases.
When it comes to the dangers of blue light, many people know that it can cause eye fatigue and dryness, affecting vision health. But maybe you don’t know that blue light can also “attack” the skin.
What harm does blue light do to the skin?
1. High-energy blue light will promote the generation of more active oxygen free radicals in epithelial cells and become more active, thereby accelerating skin aging, leading to skin loss of elasticity and increased wrinkles.
2. Research shows that because blue light has a longer wavelength than ultraviolet light, it can penetrate into the deeper layers of the skin, causing oxidative damage to cell DNA, reducing the production of collagen and elastin, and causing skin problems such as enlarged pores and dark circles.
3. Blue light can also stimulate the brain and inhibit melatonin secretion. The reduction of melatonin not only affects normal sleep, but also increases skin melanin production.
4. Blue light can cause melanin pigmentation in the skin, especially in the granular layer of the epidermis and deeper skin layers, leading to darkening, dullness, and spots on the skin.
5. If you often use electronic products before going to bed, strong blue light will destroy the balance of hormone secretion, thereby affecting the quality of sleep, and indirectly leading to problems such as dark yellow skin, acne, and hair loss.
Blue light’s damage to the skin is subtle and has a certain incubation period. Like ultraviolet rays, it is the main cause of skin aging. Blue light has a longer wavelength than ultraviolet light and can penetrate deeper into the skin and cause oxidative damage to cells. The energy carried by blue light is much weaker than that of ultraviolet light. The damage to the skin in a short period of time is not obvious, and most friends cannot feel it. His influence is mainly revealed after long-term accumulation.
What can I use to prevent blue light?
In fact, the concept of “anti-blue light” has been suspected by industry insiders as hype from the beginning, mainly because they don’t know much about blue light. High-energy blue light within 400 to 440 not only causes eye fatigue, dryness, and affects vision health, but blue light can also invade our skin by stimulating the production of free radicals and damaging DNA, making our skin prone to wrinkles and premature aging. With the development of the times, computers, mobile phones, projectors, LED displays, laser pointers and other “monsters” that produce blue light are basically with us all the time, making it difficult for us to guard against the harm of blue light. Therefore, blue light protection should become our skin care routine just like UV protection.
So how to prevent blue light and what kind of substances should be used to prevent blue light?
Earlier, we made it clear: short-wave blue light is light with relatively high energy between 400nm and 480nm. Especially the blue light between 400 and 440 is the most harmful, so we need to find the light that can reach the wavelength range of 400nm-480nm. Absorbent substances.
