For Korean, SUNSCREEN is essential for keeping the supple skin and blocking the skin aging!
First of all, let us know the Utraviolet radiations.
WHAT IS UV, ultraviolet rays??
Ultraviolet radiation is an electromagnetic wave with shorter than visible light and longer than X-rays.
There are 3 type of Ultraviolet radiation.
| TYPE | Characteristic |
| Utraviolet Ray - A | - Long wave, Deep skin pentration, Main cause of skin aging |
| Utraviolet Ray - B | - Short wave, Effectiness of skin face, Mostly inflammation or burns |
| Utraviolet Ray - C | - The shorttest wave, Deleted by Ozon layer |
The role of sunscreens is blocking the UV ray - A, B.
Because of blocking the UV ray - A, B, we wil get the anit - skin aging.
So, we should use the sunscreen everyday.
Regardless of seasons and everywhere, Use the sunscreen.
there are 3 ways of blocking the UV with sunscreen.
| Way of blocking | Characteristic |
| Reflection | - Physical block - Main ingredients: titanium dioxide (blocking UV-B), zinc oxide (blocking UV-A, UV-B) - Less skin irritation - There is white turbidity - There is a feeling of tight pores and discomfort of stickiness |
| Absorption |
- chemical blocking - Main ingredients: avobenzone, oxybenzone - It may cause stinging, stinging eyes, or trouble |
| Reflection + Absorption | - Mixed type - Brings advantages of physical and chemical blockers, and compensates for disadvantages - Select a blocker with a high ratio (chemical or physical) according to the situation. |
You can choose the sunscreen according to your skin type or your preference.
When you buy the sunscreen, you can see the 'SPF, PA'.
The meaning of 'SPF, PA' is summarized in a table.
| Factor of Blocking | note |
| SPF - Factor of blocking the UV - B (Sun Protection Factor) |
SPF 30 : Meaning that the amount of UV rays is reduced by one-half (blocks about 97%) SPF 50 : It means reducing the amount of UV light by 50% (about 98% blocking). |
PA - Factor of blocking the UV - A (Protection grade of UV - A) |
PA + : Blocks 2 to 4 times compared to bare skin PA ++ : Blocks 4 to 8 times compared to bare skin PA +++ : Blocks 8 to 16 times compared to bare skin PA++++ : Blocks 16 times more than bare skin |
| You'd better to use SPF 30 with PA+++ SPF 50 with PA++++ |
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SO. We'd learned more about the types of sunscreens.
thank you