As the saying goes: one day without skin care, you know it; three days without skin care, the whole world knows.
Especially as the weather is getting hotter day by day and the UV rays under the scorching sun are getting higher day by day, all kinds of sun protection tools will appear.
Although everyone’s natural skin color is determined by the pigments in the skin, the one that has the greatest impact on skin color is melanin.
If you want to make your face whiter day by day, then the most effective way is —–No! show! too! Positive!
Generally speaking, people with light skin are not prone to sunburn, but they are prone to redness and sunburn; while people with dark skin should not get sunburned.
Although Chinese skin is not particularly prone to tanning or sunburn, if it is exposed to the sun for a long time without sun protection measures, there will still be certain hidden dangers.
Wrong sun protection and accelerated aging?
The ultraviolet rays emitted by sunlight have a sterilizing effect, can help the body synthesize vitamin D, and help prevent rickets.
There are two main types of UV rays, long-wave UVA and medium-wave UVB, of which UVB can reach human skin The dermis layer is prone to sunburn, causing skin peeling, erythema, etc., and serious blisters.
And UVA can penetrate deep into the dermis of the skin, destroying the collagen and elastic fibers of the skin, resulting in further skin aging and skin photoaging , fine lines, and even skin cancer.
Chronic UV damage can cause skin to become increasingly dry, rough, and cause allergic reactions, which can lead to photoaging, which can lead to premature skin aging.
What are the misconceptions about sun protection?
Therefore, we need to do a certain amount of sun protection and avoid direct exposure of the skin to the sun as much as possible. If we need to go out, we must take certain physical sun protection measures, such as Sun hats, umbrellas, sun protection sleeves and more.
Of course, if some details or misunderstandings are ignored in sun protection work, the sun protection effect may be greatly reduced, such as:
One, do not need sunscreen on cloudy days
Ultraviolet rays are divided into long wave, medium wave and short wave. It is difficult for clouds to block the long and medium waves of ultraviolet rays, which will irradiate the skin through the cloud layer, causing the skin to be sunburned.
Second, sunscreen is only required in summer
Although UV rays are more intense in summer, they are still present in other seasons. If you only use sun protection in summer, your skin will still be damaged by UV rays in other seasons.
Third, choose a sunscreen with a high SPF
A sunscreen with a higher SPF has more additives. If you choose too many products with higher SPF, it will cause greater irritation to the skin.
Fourth, apply sunscreen when going out
After sunscreen is applied to the skin, it takes 15 to 20 minutes for it to adhere to the surface of the skin and act as a sunscreen. If you apply sunscreen when you go out, your skin will be sunburned by UV rays.
5. Use an umbrella for sun protection
Even a good sunscreen umbrella cannot block all UV rays. There are still 50% of UV rays that can damage the skin through the sunshade. So while using a sunshade, you also need to use sunscreen.
Six, apply sunscreen oncea day
Only applying sunscreen once will not achieve the effect of sun protection for a day. Generally, sunscreen will lose its sun protection effect after two hours of application, so it should be reapplied every two hours.
Seven, apply and then massage vigorously
Many people massage and rub back and forth after applying sunscreen, thinking that it can play a better role in sun protection. This method of using sunscreen will allow the substances in the sunscreen to enter the pores, causing the pores to be blocked.
Eighth, apply sunscreen directly after washing your face
The ingredients in sunscreen absorb moisture from the skin, which can lead to over-drying of the skin if applied directly to the face. So you should use toner first, as well as moisturizing water, lotion, and then use sunscreen.
For sunscreens, generally speaking—the higher the SPF of the sunscreen product, the better, but a product with a higher factor also means that more sunscreen is added, which may irritate to the skin.
If you usually go to work, it is recommended to choose products with SPF15, PA+, and if you exercise outdoors for a long time, you need to choose SPF25~SPF35 , PA++ products.
