What is SPF and PA that you find in Best Sunscreen Gel?


From spring to summer to autumn, it is a season when going out is fun, such as sports and leisure. However, at this time of year, the sun exposure is intense, and the amount of ultraviolet rays is large, so you are worried about sunburn. 

Therefore, I would like to introduce "sunburn," "ultraviolet rays," and "choosing best Sunscreen Gel."

In This Article

  • Why are UV rays bad for your skin?
  • How to choose the Best Sunscreen Gel that protects your skin from UV rays
  • Is it OK to apply sunscreen in the morning to prevent UV rays?

Why are UV rays bad for your skin?

Ultraviolet rays produce vitamin D in the body and maintain good health, so it is necessary to take some exposure. However, excessive exposure to UV rays can cause sunburn, wrinkles, and stains.

"Ultraviolet rays," which are the sun's rays, are divided into "UV-A," "UV-B," and "UV-C" according to the wavelength, and "UV-C" hardly reaches the surface of the earth, so it is related to "sunburn." Therefore, there are only long-wavelength "UV-A" and short-wavelength "UV-B."

The effect of UV-A immediately blackening the skin UV-A is the ultraviolet rays that "immediately blacken the skin" after being exposed to the sun. This is because it stimulates the pigment cells (melanocytes) that make melanin pigment, which produces melanin and causes pigmentation and skin cancer.

This reaction of "immediately blackening the skin" is a "skin defense reaction" that occurs when the melanin pigment works in the body to protect it from the penetration of ultraviolet rays deep into the skin. 

About 30 to 50% of UV-A passes through the epidermis and reaches the dermis, destroying the elastic fibers in the dermis, which affects the skin's firmness and causes "photoaging" of the skin wrinkles and sagging. It will lead to.

UV-B causes skin irritation

Another UV-B is UV light that "inflames the skin" and makes the skin tingling and burn. UV-B, which accounts for about 5% of all ultraviolet rays, is mainly absorbed on the skin's surface. Although it does not have the "immediate blackening" effect of UV-A, it affects dark skin color. The energy is so vital that it causes the skin to become red and inflamed. In addition, it causes stains and freckles.

  • UV-A with a long wavelength

Causes UV wrinkles and sagging that immediately blacken the skin.

  • UV-B with a short wavelength causes UV

Stains and freckles that cause skin irritation.

Get to know Best Sunscreen Gel to buy under 500?

Usually, if skin turnover (skin reincarnation) can expect, sunburn pigmentation will gradually diminish. However, poor skin function and improper care can cause sunburn to remain for a long time, becoming a stain.

For proper skin turnover, it is important not to carry stress daily, have a regular life, and eat a well-balanced diet. 

In the season when you want to go out actively, do not neglect the measures, suppress the inflammation caused by sunburn as soon as possible, and enjoy moisturizing your skin!

How to choose the Best Sunscreen Gel that protects your skin from UV rays

The indications "SPF," "PA," and "+" are found on gel sunscreen packages. This is a numerical value that shows how much it protects the skin from UV-A and UV-B, respectively. So what do "SPF" and "PA" mean?

  • SPF

SPF is an abbreviation of "Sun Protection Factor" and shows the protective effect against UV-B. The SPF value indicates how many times more UV light is applied to the Best Sunscreen Gel cosmetics than without making the skin slightly red the next day.

  • PA

PA is an abbreviation for "Protection Grade of UVA radiation." It shows the protective effect against UVA and UVB rays. PA is displayed in 4 level of protection from "PA +" to "PA ++++," and the more "+" there are, the higher the preventive power.

You might think, "Isn't it safe to choose a high SPF and PA?", But wait a minute. The important thing in choosing sunscreen is, " how long will you be exposed to UV rays?

It's hard to say, "Because it's a hassle, it's a high number...". But, especially for dry skin and sensitive skin, choosing a sunscreen based on the numerical values ​​will put an extra burden on the skin and cause skin troubles—the important thing in choosing a sunscreen.

Dermatologists recommend applying Sunscreen Gel which contains SPF 50 and PA ++++ that you can get in Derma Essentia's Sunscreen Gel SPF 50 for skin care. Here you can get to know sunscreen rating.

Is it OK to apply sunscreen in the morning to prevent UV rays?

Don't underestimate the UV rays! Even if you apply a lot of sunscreens, it will come off if you sweat, and even if you spend your time indoors, you may get sunburned by the sunlight coming in through the window. Therefore, it is important to reapply sunscreen to prevent UV rays.  Read to know the main Advantages of Applying Best Sunscreen Gel in summer

In addition, it is essential to use sunscreen properly, that adheres to the skin before going out, "spray type" that is easy to reapply on the go, “waterproof “during marine sports, and intense sweating exercise. 

First, think about how long you will be exposed to UV rays that day, and carry a sunscreen that you find easy to reapply on the go and reapply every few hours. 

Especially on days with intense UV rays and when sweating, we recommend reapplying more frequently.

By the way, it's best to apply sunscreen in the morning 15 to 20 minutes before going out. If you go out after a while, the retention rate on the skin will increase.

Comments