Medically speaking: Is phototherapy really useful?

Presumably beauty-loving women have heard of "photoaging", and they spend a lot of energy and expenditure on sun protection.
But what about the very popular "phototherapy beauty" now? Is there a scientific basis for the principle of action? Is it harmful to our skin? Today, let’s discuss the latest technology of phototherapy beauty and what advantages it compares with other popular beauty technologies (RF, Thermomagnet, Microcurrent, etc.)

First, let’s get to know what light is:
——This can help us better understand which kind of light is to be "prevented", and which light can be better used by us for beauty.

From the above picture, we can see that the colorful in the middle is visible light, which is also the light used in our traditional LED phototherapy. Compared with ordinary lasers, the output power is lower, and the light is softer than the light of the same wavelength. Therefore, LED light waves not only do not damage tissue cells, but also It will not cause occasional damage to the eyes like ordinary lasers.
Due to the refraction of different wavelengths, the colors are differentiated and accordingly have different medical effects..
Blue LED: has a bactericidal effect against cells and sebaceous glands, which can help eliminate acne and blackheads
Red LED: penetrates deep into the skin, promotes collagen production, eliminates relaxation, and restores elasticity; red LEDs with a wavelength of 633 nm are most commonly used in medical beauty.
Medical research on LEDs is also constantly deepening. For example, green LED can improve pigmentation and relieve jaundice; purple LED can kill mold; yellow LED can activate cell repair function.

Now most phototherapy beauty instruments have added infrared function, which works together with red LED. Can infrared rays be as safe and effective as LEDs?
Many people are very concerned about this problem. Now the latest term for anti-photoaging is to prevent "infrared", and even developed a special anti-infrared sunscreen. In fact, 50% of the sunlight comes from infrared rays (divided into near-infrared and far-infrared according to the length of the wavelength), and the culprit of photoaging that we have always thought-ultraviolet rays, is only 10%. So is infrared beautifying the skin really okay? ?
Near infrared rays can pass through the dermis to the muscles! If the daily sunlight is completely ignored, the muscles and skin will accelerate photo-aging, make our face shrink and shriveled, and the collagen in the dermis will also be destroyed.
However, if it is only used in a small amount, it will achieve the completely opposite effect—— Activate the original cells of muscle "myofibroblasts" and promote the production of collagen! This is the reason why phototherapy and beauty have become more and more popular recently.

Next, what are the advantages of phototherapy beauty and other radio frequency, micro current, and even thermomaggibi?
1.Radio Frequency: It is a non-invasive treatment. After touching the skin through a probe, the radio frequency energy is transmitted to the depths of the skin. This heating enables rapid tightening of our skin structure and subcutaneous tissue. The output frequency of most household RF beauty instruments is actually 0.4~1MHz, and the main effect is on the skin layer.
2. Micro current: We have a weak current flowing through our body, which is called biological current. Micro currents are extremely weak currents at the same level as biological currents. Like low-frequency electricity, it can act on muscles, causing muscles to contract, thereby promoting blood circulation, but it does not have the sensation of muscle movement like low-frequency electricity. It acts on the superficial layers of the skin and can only be used as the most basic skin care, and cannot solve the deep aging problem.
3. Thermage: Before the operation, place a grid on the treatment site, and then use a radio frequency electric field to form a focal plane (frequency 6MHz), and act on the subcutaneous tissue to burn the dermal tissue. The subcutaneous tissue mistakenly believes that the tissue is injured and will actively send out healing signals. Supplementing ACMETEA repair factor makes the subcutaneous tissue produce a lot of collagen and hyaluronic acid, which can be used to repair the damaged area, while relying on these collagen and other nutrients to repair the subcutaneous tissue again, so that it can achieve the purpose of lifting and tightening the skin anti-aging. The treatment depth is less than 3.0mm (usually 2.6 to 3.0mm), and the deepest can only reach the dermis layer, not the fascia layer. The price is expensive, usually only as a high-level maintenance once a year.
4.Near-infrared: Due to the strong biological effects of near-infrared rays, by designing the wavelength range and irradiation conditions, it can be effective even for diseases and areas that are difficult to respond to other phototherapy methods. In addition to promoting collagen resynthesis and promoting the production of elastic fibers, near infrared can also be used to relieve excessive muscle contraction.
In fact, Real home beauty equipment containing "near infrared" phototherapy is very rare. If you want to buy light therapy products, not only need to pay attention to the specific parameters of the LED wavelength, but also determine whether the infrared function is "near infrared", so that you can get the most professional results.

So a new question is here, how to choose a phototherapy instrument?
If you only want to do daily basic maintenance and do not have the desire for collagen, it is enough to start with an instrument with low frequency iontophoresis and a red LED, and the price will not be very expensive;
If you want to achieve results in the shortest time, you can go to a beauty salon or hospital to receive more professional phototherapy, which is relatively expensive. And it is definitely incomparable to a Ordinary instrument.
Among all the phototherapy products, I personally recommend the most popular at home led light therapy mask model: LED Face Mask, GYH 7 Colors LED Skin Mask - Blue & Red Light for Face and Neck Skin, Ultra-Light Wireless Facial Photon Beauty Mask for Rejuvenation Tightening Skin(Only 260g)
GYH LED face mask has a large space and extremely light weight, which reduces the weight of the mask to one third of the ordinary mask（(only 260g), greatly increases comfort. The controller has only one button, convenient and easy to operate. Fully automatic mode is suitable for lazy people like me. After finishing the facial cleansing, lie on the sofa and start a 20-minute treatment. In addition, there are seven colors for us to choose.