Keep away from sunscreen misunderstandings and do nothing

Although September is early autumn, the sun in September is still sinister and empty. Therefore, MM who is about to enter the military training grounds should still do well in sun protection measures. I don't know how much cute MMs know about sun protection. Is it going to go into the sunscreen misunderstanding as silly as I was? Today, Xiaobian will talk to you about the eight sunscreen misunderstandings that I have to know.

Sunshine Misunderstanding 1: Only need sunscreen in summer?

Many MMs only take sunscreen measures on hot summer days, thinking that they don't need sunscreen after the summer. this is actually wrong. Before correcting this error, let's first understand the difference between UVA and UVB.

UVA is long-wave UV, UVB is medium-wave UV, both of which can be injected into human skin and penetrate the dermis to make the skin tan. However, UVA is not blocked by windows, umbrellas, etc., even if it is rainy and cloudy, and UVB can be blocked by clouds, glass, clothes, umbrellas, etc.

That is to say, UVB is usually present outdoors and is more intense in summer or sunny days. The UVA is inseparable from the weather in the four seasons, indoors and outdoors. So, even if you stand outdoors on a cloudy day in the winter, although you won't feel the skin is tanned, the effect of UVA will slowly accumulate in your skin, allowing you to accelerate and grow old. Now you know why it is not summer. Also have sunscreen!

Sunshine Misunderstanding 2: The bigger the SPF value, the better?

SPF refers to the protection against UVB, and the coefficient behind the SPF value indicates that the skin can be prolonged by UVB. The larger the coefficient, the longer it takes to prolong the sunburn, but it does not mean that the sunscreen effect is better. Because the higher the SPF, the product contains more sunscreen, and the added sunscreen is also inevitable to the skin, which is why many people use the high-factor SPF sunscreen after skin products are allergic.

So, what is the appropriate use of sunscreen products? For daily protection and maintenance, just choose a product with a SPF of about SPF15, so only the office workers who are in contact with the sun on the way to and from work, the SPF value can be below 15, Mainly face sunscreen. In the summer with strong sunshine, as well as swimming in the wild, swimming on the beach, etc., the SPF value of 30 is enough. The perfect sun protection measures are not to increase the sun protection factor, but to supplement the sunscreen with the loss of sweating and wiping to achieve the best sunscreen effect.

Sunshine Misunderstanding 3: Is SPF and PA the same thing?

PA refers to the protection against UVA, and PA is used to measure the sun protection factor of the product. The PA+ effective protection time is approximately 4 hours. The effective protection time of PA++ is about 8 hours. PA+++ super protection. Because UVA has a strong penetrating ability, it can penetrate glass, clouds, and even penetrate some summer clothing to the skin dermis, which is more harmful to the skin. Therefore, try to choose PA+++ products when sunscreen, and prevent UVA damage to the skin as much as possible.

Sunscreen Misunderstanding 4: Apply sunscreen a few minutes before going out.

Sunscreen must be applied before the door, preferably 30 minutes in advance, because the sunscreen does not start to play its role in sunscreen at the moment of application.

After the sunscreen is applied, it takes a certain amount of time to form a film on the surface of the skin before it can function. Depending on the dosage form, the formation time is different. The sunscreen lotion forms the film for the longest time because the small particles must be coalesced, but the sunscreen effect is the best; the sunscreen oil forms the film for a little time, and the corresponding sunscreen effect is also Slightly poor; waxy and powdered products are the fastest, but the sunscreen effect is also the most general.

Sunscreen Misunderstanding 5: Skin care products, sunscreen products, makeup products can be used at the same time?

Many people use sunscreen products after using moisturizing milk and so on. When using makeup products, will this affect the SPF value of sunscreen, and will they dissolve the nutrients or protective ingredients in the products?

This is a common concern because certain ingredients in skin care products or make-up products have indeed been shown to react with sunscreen products. In some cases, this effect is beneficial and sometimes harmful. Therefore, it is best not to mix sunscreen products with other products. The correct way to use sunscreen products is to leave a 10 to 15 minute interval between each product. If skin care products, sun care products, and makeup products are used at the same time, sunscreen products may be diluted and will not perform as they should.

Sunscreen Misunderstanding 6: Sunscreen products do not need to remove makeup?

The purpose of the make-up remover is to clean up all the sunscreen products applied to the face. In general, ordinary sunscreen products do not require makeup removal, and can be completely removed with facial cleanser. But for some greasy sunscreen products, facial cleanser is difficult to wash (the face is still very slippery after washing), in this case you need to remove makeup. After removing makeup, pay attention to moisturizing, apply toner and cream.

Sunscreen Misunderstanding 7: Sunscreen can also be used directly after toner?

Although many MM have sunscreen awareness, they know that the door is good for sun protection measures, but often because of lazy cancer, the sunscreen is applied directly after the toner is wiped off. Some toners are not rubbed, and the sunscreen is applied directly. The damage is great. Sunscreen is the last step in skin care and maintenance. It is the first step in the beginning of make-up. Don't try to save time and simplify the steps. Applying sunscreen directly to the face without lipid protection will give the powder a better chance of clogging the pores and causing acne and acne. If it is a sunscreen with a high proportion of chemical sunscreen ingredients, it will cause more direct stimulation to the skin after absorbing sunlight.

Myth 8: Is it enough to wipe the sunscreen once a day?

If you have to go out all day today, will you only apply sunscreen before going out in the morning, and then keep it until the evening? This is wrong! Because the general sunscreen is 30 minutes, it is waterproof. The degree is 80 minutes. If you want to go out and know that you will be in the sun for a long time, you should bring sunscreen with you and then wipe it once every hour.

If the sunscreen is used to cover the entire face, it will take about 1ml at a time, if it is about 30ml.