First, you need to know about ultraviolet rays.
Ultraviolet rays can be divided into UVA, UVB, and UVC.
UVA causes aging on the skin, accompanied by redness similar to a burn.
UVB causes skin darkening.
Since UVC is filtered out by the ozone layer, you don't need to worry about it, right?
SPF is effective in blocking UVB rays.
It is indicated with a number, such as SPF 15 or SPF 30, and the higher the number, the more UV rays it blocks.
SPF 15 for daily life That is enough, but
For outdoor activities, at least SPF30 We recommend using it for a longer period.
PA has the effect of blocking UVA!
It is indicated using a plus sign, such as PA+ or PA++.
In this case as well, the more plus signs there are, the higher the UV protection rate.
PA+ during daily life That is enough, but
For outdoor activities, at least PA++ We recommend using it for a longer period.
Sunscreen can also be divided into two types based on the method of blocking ultraviolet rays.
Non-sunscreen blocks ultraviolet rays physically by forming a film on the surface of the skin.
It has relatively mild ingredients, but
It has a white cast that makes the skin look white when applied, and it has the characteristic of being thick when applied.
In the case of organic sunscreens, the incoming ultraviolet rays after being absorbed into the skin
It chemically blocks ultraviolet rays by converting them into thermal energy and releasing them.
Since it uses chemical blocking, those with sensitive skin should exercise caution, but it is characterized by applying smoothly without smudging compared to mineral sunscreens.
