From winter to spring, the warm sunshine makes you feel good and radiant. However, as the footsteps of summer approach, the sun gradually peels your fangs …
Yes, UV rays are the natural enemy of beautiful skin!
Everyone thinks that it is important to apply sunscreen as a measure against UV rays.
You may think “what’s more natural now”, but when choosing a sunscreen, understand the difference between “SPF” and “PA” written on the sunscreen package. Are you choosing?
The reality is that many people choose it for passive reasons, such as because it is a new product because it is decided by price or seen in advertisements. This is not enough to protect your skin, which has only one important thing, from UV rays.
This time, from the difference between “SPF and PA”, which is the basis of sunscreen, how to choose sunscreen according to TPO, and what to do if you have a stain even though you are using sunscreen. I will explain. Please refer to it so that you will not lose the transparent, youthful and elastic skin that is not affected by the UV rays that fall on it!
What is the difference between SPF and PA
Before explaining the difference between SPF and PA, let me briefly explain about ultraviolet rays. Ultraviolet rays are classified into the following three types according to their wavelength.
- UVA
- UVB
- UVC
UVC is absorbed by the ozone layer and does not reach the surface of the earth. The problem is UVA and UVB. If you neglect to take measures against these two types of ultraviolet rays, it may cause stains, wrinkles, and sagging.
The indicators to remember are SPF and PA.
Let’s get into the main subject!
What is SPF
SPF is an abbreviation for “Sun Protection Factor”. The meaning is a measure of how effective it is to prevent UVB.
UVB is one of the two types of ultraviolet rays that reach the surface of the earth, but it is characterized by redness and inflammation of the skin in a short time .
It is the effect of UVB that the skin becomes tingling and bright red when exposed to the sun.
When exposed to a lot of UVB, melanocytes are activated and produce melanin in an attempt to protect the skin.
And if melanin is not properly excreted from the body, it will become spots and freckles.
SPF is divided into “1 to 50+”, and the larger the value, the higher the protective effect against UVB.
What is PA
PA is an abbreviation for “Protection Grade of UVA”. Unlike SPF, this is a measure of how much UVA is prevented.
UVA is different from UVB in that it loses the elasticity of the skin over a long period of time .
I’m sorry for the childishness, but please imagine the well-done of the steak. It takes a long time to cook the meat to the center, but unlike rare meat, the fibers shrink due to heat. Furthermore, if you want to overcook it, make it dry.
What if something similar is happening on your skin?
Unfortunately, UVA reaches the dermis layer of the skin. As a result, it damages fibroblasts.
Fibroblasts are cells that produce collagen, elastin, and hyaluronic acid, which produce elasticity and firmness of the skin.
You already know.
Cruel, injured fibroblasts can’t stop the aging of your apparent age. Moreover, this UVA is highly transparent. This means that your skin can’t escape UVA, whether you’re at home or not.
You’ll want to shout “Don’t threaten me anymore!”, But rest assured that we’ll also give you effective UVA protection in the second half!
PA has four levels of “+” marks to rank the defense effects. The protective effect against UVA increases in proportion to the number of “+” marks.
If you choose sunscreen, like this
If you’ve read this far, you might quickly say, “UV rays are scary! It’s okay if you choose the strongest sunscreen anyway!” I understand how you feel, but I don’t recommend choosing just for strength in the dark clouds.
Sunscreens show their true value only when used properly according to the TPO.
Here, From the Ministry of the Environment’s “UV Environmental Protection Manual 2020” , how to use sunscreen properly I will introduce a concrete example of, so please refer to it.
Everyday life
If you are going out for a walk, commuting, or even shopping at a convenience store, “SPF10-20 / PA ++” is sufficient.
It’s about a few minutes to an hour outdoors.
Light sports outdoors
If you play tennis outdoors or spend a couple of hours outdoors, such as in business, choose a sunscreen with “SPF30 or higher / PA +++”.
Leisure under the scorching sun
When exposed to ultraviolet rays for a long time under the scorching sun such as marine sports and BBQ, it is the best sunscreen in Japan with “SPF 50 or higher / PA ++++”.
The above is an example of simple usage, but for people with dry or sensitive skin, applying sunscreen may cause the skin to become rough. In that case, SPF and PA are also important, but consider “UV absorber-free” or “non-chemical prescription” sunscreens.
How to use different sunscreen dosage forms and how to apply them effectively
I hope you understand the difference between SPF and PA and how to use them according to TPO, but when you go to a drugstore, you run into a new problem.
That is the difference in dosage form.
There are different types, which can be confusing, but if you have the knowledge, you can make the best choice, so it’s okay.
There are three points to use the dosage form properly.
- Before going out: “Painting type” that adheres
- On the go: “Spray type” that is easy to repaint
- When sweating in marine sports, etc .: “Waterproof” that is hard to remove with water
I have nothing to tell you anymore! I would like to say that the effect of sunscreen is subtle if it is not applied properly.
Even though you have applied sunscreen, you may end up getting sunburned. This is because the amount of sunscreen is small or you forget to apply it.
You can prevent it by applying sunscreen according to the following procedure, so please refer to it.
- Put out a sunscreen about the size of a 1-yen coin in the palm of your hand
- Put sunscreen on both cheeks, forehead, nose and chin
- Spread from cheeks and forehead
- Spread from the center of the face to the outside to every corner of the face
- Repeat steps 1 to 4 again
Many people paint their faces carefully, but they tend to forget the back of their neck, hands, décolletage, and lips. Don’t give yourself a chance to get in the UV!
Don’t forget to repaint frequently.
If you sweat, the sunscreen will run off, and if you wipe the sweat, the sunscreen will also be wiped off. Don’t forget to reapply every 2-3 hours .
Also, the amount of UV rays that fall from noon peaks out, but it is not zero, so be sure to apply it not only when you leave the house but also when you go home.
You can’t use sunscreen only in summer!
You will no longer be confused about how to choose a sunscreen. But there is one more thing to keep in mind.
Ultraviolet rays are shining every day 365 days a year.
The amount of UV rays peaks in summer, but does not reach zero in winter. Even in winter, about half of the ultraviolet rays in summer are pouring in.
In other words, if you do not take any measures against UV rays even in winter, your skin will be crispy like a pizza baked in a kiln. It is.
However, using sunscreen every day is honestly a hassle.
Therefore, I would like to recommend the following two.
- Use skin care products that have a UV blocking effect on a daily basis
- Put a UV cut film on curtains and windows that have a UV cut effect
If you make the skin care products you use every day UV-blocking, it will not be a hassle, and if you prevent UV rays from entering the room in the first place, there is nothing to be afraid of.
For those who are motivated to take measures against UV rays, please also refer to “Eating habits are basic to prevent stains! How many are you doing?”
Only those who control UV protection can get whitening!
The clear white skin is so attractive that it captivates the viewer, and above all, it doesn’t make you feel age, so you can feel confident in yourself.
However, constant efforts are essential to obtain and maintain clear and youthful skin. Correct knowledge is indispensable for that.
If you use this article as a guideline and choose a sunscreen, there is no doubt that your UV protection is a solid foundation.
It can be hard to think about, but in a few years you will be amazed at the effect.