Super full on sun protection Q & A
Why is my skin sunscreen or dark?
What is the right sunscreen?
How to choose the right sunscreen?
Many beauty-loving people always have a “love-hate” relationship with the sun. Some people like the sexy complexion brought by sunbathing, while others try their best to avoid the “gift” of the sun on the skin.
But no matter what, it is a season that needs sun protection. People who love their skin always want to know more sun protection methods. Xiaobian collected netizens’ Q & A for sun protection for everyone.
Netizens’ Q & A Q: Do I need to apply sunscreen after applying a cream?
A: Not necessarily.
This must first understand the difference between the two.
The definition of a barrier cream is relatively broad. Only makeup base products that modify the skin tone, smooth skin, and cover pores can also be classified as a barrier cream. The most important use of sunscreen is to isolate ultraviolet rays, which are called UVA and UVA.UVB (Not only these two types of ultraviolet rays, but others do not cause much damage to the skin).
However, in order to improve product effectiveness and simplify skin care procedures, manufacturers now sometimes introduce products with two functions.
Q: The thicker the sunscreen product, the better the sunscreen effect?
A: Not necessarily.
Although sunscreen products do need to be applied in a sufficient amount to fully achieve the sun protection effect on the label, if they are applied too thickly, the skin will not be breathable and acne and acne problems may occur.
The most moderate amount to apply sunscreen products is to reach 0 on the surface of the skin.
The thickness of 1MM, especially for outdoor activities and long-term exposure to the sun, in addition to the amount should be sufficient, remember to reapply every 40-80 minutes, so as not to reduce the sun protection effect.
Q: Can sun and face products be used interchangeably?
Because the skin on the face is not the same as the skin on the body, in general, the sunscreen that can be used on the face can also be used on the body, but the converse is not recommended.
The ingredients of body sunscreen products are not as delicate as those for facial products. Applying it on the face can easily cause sensitivity and irritation of the facial skin, so it should be avoided.
Q: Eyes and lips do not need sun protection?
The skin on the eyes and lips is more delicate than the skin on the face and is more vulnerable to UV rays. Therefore, these two parts should be more protected.
Eye sunscreen products, it is best to choose moisturizing texture without greasy, easily absorbed by the skin, and can provide eye skin soothing, moisturizing and repairing products.
Q: The larger the SPF / PA value, the better?
A: Not necessarily.
Although the higher the sun protection factor, the higher the protection of the skin, but you still have to choose the sun protection factor according to your environment and activities.
Choose a sunscreen with a proper coefficient to keep the skin fresh and free of burden so that it can be completely absorbed by the skin.
For daily protection and maintenance, you only need to choose around SPF15, which can already block 93% of UVB, while SPF30 products can block 97% of UVB, the difference is not too big.
However, if the sun protection factor is too high, it will cause a burden on the skin. Instead of emphasizing the coefficient, it is better to apply sunscreen regularly, and the effect is more guaranteed.
Q: Sunscreen products that have not been used up this year will continue to be used next year?
It is best to use the sunscreen within 3 months to half a year from the date of opening, because each time you open and close, the external air and humidity will affect the quality change, so it is recommended to use it as quickly as possible.
In addition, the ingredients in sunscreen products originally absorb ultraviolet rays. After being left for one year, the sunscreen ingredients in them have almost absorbed, and they can no longer absorb ultraviolet rays.
Q: Sunscreen products are not makeup, don’t you need special makeup?
Sunscreen is the same as adding a protective layer to the surface of the skin, which is the same as the foundation’s covering principle. Of course, it needs to be removed.
And many sunscreen products are waterproof and oil-proof, and often cannot be thoroughly cleaned with a general cleanser, so after applying sunscreen, remember to help your skin remove makeup.
Q: How do I know if sunscreen products are waterproof and sweat-proof? A: If the product has the WATER-RESIS 鄄 TANT mark on it, it means that the product can face the sunscreen effect in water for about 40 minutes; if it has the VERYWATER-RESISTANT mark on it, it means that the product can last for 80 minutes in waterLeft and right protection.
In addition, you can also use a cup of clear water for testing. The sunscreen is dripped into the clear water. The less easily it blends with water, the more water-resistant and sweat-proof it is.
Q: Asians are less prone to getting spots?
Because of Asia ‘s topography and climate, UVA ‘s damage to the skin is much greater than in other regions. In addition, Asians ‘skin texture is a dominant constitution of congenital melanin production, and the amount of melanocytes can also be generated.People in other areas are fast, and the metabolism of melanin in the epidermis is relatively slow. It is easy to cause uneven distribution of melanin, pigments precipitate, and spots are formed.
Q: Can sun protection also fight aging?
A: It should be said that sun protection alone cannot completely prevent aging, but anti-aging must be done with sun protection.
An investigation report pointed out that the ultraviolet rays exposed to the sun before the age of 18 accounted for 80% of a person’s life. Applying sunscreen SPF15 or more to 18-year-old infants every day until the age of 18 can reduce the risk of skin cancer by 78%.
Experts suggest that lightly mature men and women who have passed the age of 25 must even reflect sun protection in their daily homework. It can be seen that sun protection is important for the appearance of beauty, and more importantly to maintain skin health.
Only by maintaining the normal immune mechanism of the cells, can the skin’s self-defense be restored, and the chance of skin aging can be fundamentally reduced.
Q: Is there a light-sensitive substance in a certain food?
A: Many foods have this phenomenon, and some medicines have similar conditions, such as gray enzymes.
There are mainly more wild vegetables in the plant, as well as chemical materials such as animal food and chlorine and hydrogen, which will also produce this reaction after exposure to sunlight.
Q: Is it better to go out to bask in the spring and summer?
Answer: Exposure to the sun can also cause some trouble, because after the transition of the sun is excessive, the skin is damaged by sunlight.
Sometimes when we swim in free radicals, the skin will appear red and swollen in the exposed area. Even at night, there will be blisters and dry mouth and uncomfortable feeling. This is called sunburn, and it is medically called solar dermatitis.
This situation is a photometric reaction. Almost all people experience this kind of reaction after a winter, when they are suddenly exposed to strong sunlight in summer.
Q: What new problems will occur after sun exposure?
A: Redness and swelling of the skin caused by sun exposure, followed by bleeding and pigmentation. This is a normal physiological process and a self-protection ability of the body against sunlight.
For example, after sieving this time, the skin pigmentation will be reduced, and the next time it will be resistant to sunlight, it is also a sign of health.
There is another situation that requires special attention. We call it plant solar dermatitis, which is to eat certain plant foods. It just means that many people like to eat some wild vegetables in the summer in the north. After eating, there are some light-sensitive components that are absorbed through high temperature channels.It is distributed into the skin. If you eat this food at the right time, it is called mustard dumplings and the like. After the change, it will be exposed to the sun, but it is only said that there is a small amount of easy sunlight reaction on the forearm of the face.Red, swollen, blisters and even necrosis, leaving scars after healing.
Question: Isn’t the person often exposed to the sun, the skin will have a self-resistance?
Answer: Sunburn is a protective effect, but long-term long-term sun exposure, or eating long-term armed outdoor activities, there is a lot of sunlight, this situation will produce a type of chronic sun damage.
Q: What kind of performance does chronic sunlight damage show?
A: Light aging will actually increase skin wrinkles, gully vertical and horizontal type performance, very old.
The person in this picture is a very obvious manifestation of skin aging. Maybe this person is actually not so old, because he is exposed to more sunlight. Of course, the aging of the skin is physiological and has to be wasted, exogenous.The main cause of skin aging is sunlight, so sunlight can be avoided through protection. Avoiding the sun can delay the skin aging process.
Question: Is there a big difference between the eastern and western aesthetics of skin color?
We Chinese people like fairer skin, Europeans and Americans like wheat-colored skin. There are two ways to appreciate it, so Asians like to take a measure of covering.
Let me show you a photo. This photo shows that our Asian gay men are still holding umbrellas. In several European and American countries, lesbians also wear very few clothes in the sun, and enjoy the sunHowever, this can cause a problem of photoaging.
Q: What does UVA and UVB mean?
A: Ultraviolet light is a kind of wavelength light, we artificially separated him into several segments.
The shortest wavelength of ultraviolet rays is called UVC. This ultraviolet rays are fully absorbed by the atmosphere when sunlight passes through the earth’s surface, and will not hit the earth’s surface and cause no harm to people.
The other is medium-wave ultraviolet, which is UVB.
It ‘s very toxic in sunny places, so it ‘s easy to cause sunburn. The other is called long-wave ultraviolet, called UVA, which has a longer wavelength and stronger penetrating power.Even thin clouds can penetrate and even be reflected and refracted by light, which can cause skin damage, but the toxicity is relatively weak.
Among the ultraviolet rays we receive, there is more UVA and less UVB, but UVB is more toxic to the human body.
Q: Is sun protection the UV protection?
A: Sunscreens are mainly UV-resistant, especially UV-B. In fact, polymorphous solar rash is also caused by UVB, but sunscreens have better UVB-proofing effects, and UVA-proofing effects are worse.Black, aging will play more of a role.
Sunscreen cannot completely block the darkening and aging of the skin.
Question: On cloudy and rainy days, if there is no sun, is there no UV? A: At this time, the ultraviolet rays are very weak, but if it is only a thin cloud layer, UVA long-wave ultraviolet rays can penetrate, and many sunscreens are basically anti-UV rays.
Q: Why is a thin layer of sunscreen resistant to blocking UV rays?
A: There are two main types of sunscreens: a large number are physical covering materials, sometimes called titanium dioxide; another type is zinc oxide, which is a small particle that is mixed into a cream and applied to the skin to become whiteA piece of it can form a protective film, reflecting the ultraviolet light.
If the SPF value just mentioned is very high, it will require a lot of covering material, and it will be greasy to apply.
The other ingredient is a chemical sunscreen that can absorb or heal skin damage caused by ultraviolet rays. A general sunscreen is a mixture of two ingredients.
Q: Today’s sunscreen products are outstanding and refreshing, so what’s the difference between a refreshing sunscreen and a greasy sunscreen?
A: If it is particularly refreshing, the sunscreen effect is definitely not as good as a greasy sunscreen.
Because physical shielding plays an important role in the effect of sunscreen, the sun protection index must be relatively oily. If it is refreshing, unless there are many chemical additives, even this is not as good as the oily effect.
Q: Some sunscreens have a lot of plus signs behind PA. What does this mean?
A: PA ++ refers to the strength of a protective effect against UVA. The more plus signs, the better the protection.
Q: What do the most common SPF values mean?
A: The SPF value is a professional term called an abbreviation for sun protection index, which refers to a certain sunscreen, which can increase the skin’s protective ability against sunlight several times. As mentioned earlier, the sun will cause skin rednessIf you apply this thing, the time of redness and swelling will be a little longer. The two comparisons will give a value.
Q: Is the SPF value higher, and the longer the sun protection, the better the effect?
A: It may be better if it is large, but it is not a multiple. For example, it is SPF55. It can actually block more than 90% of the sunlight, and it can be increased to 30%.Since you add things, the more chemical things, the more physical things, the feeling is not good, so there is no need to blindly choose a sunscreen with a high SPF value.
Q: Generally speaking, how much SPF value is enough?
A: 10-15 is enough. Q: How to choose sunscreen correctly?
Answer: 1. For people with normal skin, the SPF value is 8-12.
2. For people who are sensitive to light, the SPF value is 12-20.
3, office workers, SPF value is below 15.
4, outdoor swimming beach, SPF value of 30 or more.
Special Note: Be careful when choosing sunscreen for sensitive skin!
Q: How to deal with friends who have been sunburned?
A: If it is a little bit red, you can use some ice water at home, put the normal saline in the refrigerator, and apply the ice water directly, so it can be cooler.
If you go to the hospital, we will use some dry cleaning agents in the hospital, such as menthol and a cool coat.
Q: Is sunscreen harmful to children’s skin?
A: Children’s skin development is not complete, it belongs to allergic skin.
For example, when you have eczema, don’t use these sunscreen products.
If you must use it, you can experiment before using it to see if you have an allergic reaction. If you are allergic, do not use it.
Q: How to protect our eyes in summer?
A: The best way to protect your eyes is to wear colored glasses.
The colored glasses have the function of blocking ultraviolet rays, mainly not in the color itself, but in the material of the lens.
Glass lenses and resin lenses can block more than 90% of the ultraviolet rays. Therefore, when wearing glasses, the anti-ultraviolet function lives on the glass lenses, not on the color depth.
Q: Should hair be protected from sun?
A: The hair should also be sunscreen, because the hair is also part of the skin, so the sun can still cause his injury, the skin is dry, dry, broken, especially the color of the hair, it is easy to fade.