How to make the best use of sunscreen in autumn. We are faced with all kinds of radiation every day, such as ultraviolet rays and fluorescent lamps can damage our skin, whether indoors or outdoors, our skin is harmed by radiation, so how to maximize the use of sunscreen? Today's editor teaches you to save new ideas!
Don't ignore the fluorescent lamp
According to the survey data of China photobiology and photochemistry Committee, the harm of indoor light source exposure for two months is the same as that of outdoor exposure for one hour at noon.
Earlier, in the special program "Kangxi is coming", Procter & Gamble beauty expert Chen Li said that the top ten skin whitening killers found through research include: solar UVA, solar UVB, halogen lamp, fluorescent lamp, mercury lamp, neon lamp, computer screen, LED light, ultraviolet germicidal lamp and tungsten lamp. Therefore, whether indoors or outdoors, sunscreen should be an indispensable lesson anytime and anywhere.
Sunscreen is a matter of all seasons
All year round can use PA + + or above, SPF30 or above sunscreen. SPF1 stands for 15 minutes against UVB, and so on, SPF30 can resist ultraviolet for about 7 hours, spf50 can resist ultraviolet for about 12 hours. PA value represents the resistance to UVA, + means strong, + + + means strong, + + + is the strongest. In China, due to the regulations of relevant departments, the maximum SPF value can only be marked to 30, so when selecting products, in addition to looking at the index, pay attention to the + value behind Pa will be more intuitive.
Tanning and sunburn are two different things
Tanning and sunburn are skin aging caused by UVB (medium wave) and UVA (long wave) in ultraviolet rays. UVB mainly acts on the epidermis and can directly cause skin sunburn, so it is easy for people to feel and pay attention to it. However, the content of UVA in ultraviolet light is as high as 95%, and the damage it brings to the skin is often ignored because it is not intuitive. In addition to acting on the epidermis, 20% to 30% of UVA can reach the deep layer of dermis, causing fundamental damage to the skin. Therefore, sunscreen must put UVA and UVB in ultraviolet rays in the same important position.
It's not the rule to repaint in two hours
The main reason why sunscreen products need to be repainted is not only worried about the failure of sunscreen ingredients, but also because sunscreen products will be lost due to many internal or external factors after use, such as sweating, clothing friction, swimming and other activities. The frequency of repainting depends on the situation, and there is no absolute value. If the environment is stuffy, hot and sweaty, and it is in the condition of outdoor activities, it may need to be repainted in less than 1 hour; if it is in a cool indoor environment without sun exposure, it can be repainted in 5-6 hours.
Sunscreen products inside and outside the room are very different
For indoor sunscreen, it's better to choose products with titanium dioxide or zinc oxide added. The substances in these two kinds of physical sunscreen products can not only resist the ultraviolet light in the sunlight, but also have good effect on the visible light. The most important thing for outdoor sunscreen is to make up for sunscreen. First calculate the protection time of sunscreen, and then make up for it when the sunscreen is about to lose its time, so as to most effectively prevent the invasion of sunlight.
How to maximize the use of sunscreen
Tips for maximizing the use of sunscreen
Q: There is a saying that every two hours you have to make up for sunscreen. Is there any basis?
Niu Er (Taiwan Beauty godfather, hereinafter referred to as' Niu '): No, if the sun exposure time is 20 minutes, take the protection time of SPF30 as an example, 20 (minutes) & times; 30 (SPF) = 10 (hours). If it's not sweating, soaking and so on that cause the loss of sunscreen is particularly serious, you don't need to fill it so quickly, because sunscreen can't be superimposed. If you want to re apply sunscreen, please apply it on the palm of your hand first, then wipe it off and gently press it on your face.
Q: Sunscreen rub more will feel thick, there is no way to determine how much sunscreen to use?
Bull: to achieve sunscreen effect, 2 mg of sunscreen lotion per square centimeter skin needs to be rubbed. The easiest way is to evenly spread 3 times, each time is 2-3 times the amount of rubbing lotion, the size of a dollar coin.
After reading the above content, you should have some understanding of how to make the best use of sunscreen in autumn. Today we will introduce how to make the best use of sunscreen in autumn. More topics about sunscreen in autumn will be introduced in the following articles. Welcome to check. Wish you a happy life!