1, what's the harm of taking too many selfies?
According to reports, MehreenBaig, a famous British fashion blogger, posts at least 50 selfie photos to social media every day. After a while, netizens found that her skin became very poor: large pores, more freckles, deeper wrinkles and even dark circles. In this regard, some doctors said that frequent selfies exposed the face to high-energy visible light emitted by mobile phones for a long time, which damaged the skin and led to premature aging of the skin. So, is this really the case? Can selfies really make people old and ugly?
"Skin aging includes natural aging and photoaging." Professor Zhao Yi, director of dermatology department of Tsinghua Chang Gung Hospital, said in an interview with Science and Technology Daily reporter that as long as we observe carefully, we can find that our skin is still young and beautiful compared with facial skin. Why? "This shows that facial changes are not only natural aging, but also photoaging. In other words, light promotes premature aging of the skin. "
Zhao Yi further explained that, generally speaking, the main external factor leading to skin aging is ultraviolet rays with a wavelength of 200 nm-400 nm. Among them, ultraviolet rays (UVA) with very strong penetrating power can penetrate the surface of glass, clothes and skin, and even penetrate deep into the tissues below dermis, causing wrinkles, pigmentation, telangiectasia, collagen reduction, elastic fiber degeneration and so on. Most of the mobile phone screens are visible light (purple, blue, cyan, green, yellow, orange and red), and the wavelength of visible light is 390 nm-780 nm, among which blue light is short, and the wavelength of high-energy visible blue light is 380 nm-450 nm, and the wavelength range of short-wave band is consistent with that of long-wave ultraviolet light, which does have a certain impact on the skin, but this does not mean that high-energy blue light can be compared with ultraviolet light. In Zhao Yi's view, compared with the ultraviolet rays emitted by the sun, the visible light emitted by mobile phones is simply too weak to be the culprit of photoaging.
Although the light of the mobile phone does have a certain impact on the skin when taking selfies, many external factors should be considered for premature aging like online celebrities. Zhao Yi said: "For example, if you take 50 selfies a day, if you shoot outdoors, there will be ultraviolet radiation;" If you shoot indoors, you need a strong external light source for the shooting effect. These lights may have a greater impact on the skin than the light emitted by mobile phones. In addition, factors such as the use of self-portrait skin care products and the regularity of work and rest will have an impact on the skin. " Zhao Yi stressed that just looking at the mobile phone will not cause great harm to the skin.
2. How to maintain the skin in winter?
1. How to protect skin from dryness in winter?
It is best to make a mask 2-3 times a week to strengthen hydration and moisturizing. Make skin smooth and delicate, smooth fine lines, and even better, form a transparent protective film on the skin surface, reduce water loss, and keep skin elastic, firm and Shui Yang clear! Various facial masks have different effects, some of which have excellent moisturizing effect on the skin, and can provide moisture and nutrition needed by the skin, making the skin smooth and soft.
2. How to protect the skin from peeling in winter?
When the outside temperature drops and the air is dry, the pores of the skin are often in a state of contraction, and the aged cutin of the epidermis is not easy to fall off. Thickening of epidermis can protect the skin from excessive loss of moisture and nutrients, but at the same time, it also makes skin care products difficult to be absorbed by the skin and can not play a role in moisturizing and maintaining. Therefore, preventing skin desquamation is an important part of skin care in winter. You can choose anti-dandruff cream in stores or beauty salons, and buy a type suitable for your skin under the guidance of a beauty consultant or professional beautician. Use it 1-2 times a week. Usage: After cleaning the skin with warm water at night, apply anti-dandruff cream on the face, avoid the eyes and rub along the skin texture for a few minutes, then wash the face with clear water, pat the toner to balance the pH of the face, and then apply skin care products, so that the skin will feel particularly fresh, breathable, moist and comfortable.
3. How to protect skin from the sun in winter?
Low temperature and air conditioning in winter will pose a threat to the skin, but we cannot ignore the harm of sun exposure. In the daytime outdoors, ultraviolet rays are everywhere, which will destroy the fibrous tissue and collagen of the skin, make the skin slack and aging, promote the synthesis of melanin, make the face dull and produce spots. Therefore, when going out in winter, you need to apply sunscreen or cosmetics containing anti-ultraviolet agents to your skin.