Learn the Meaning of Sunscreen Terms!

 

If you are currently using sunscreen

It is also a good way to understand it by looking at it together!

 

 

UVA & UVB

UVA & UVB refer to types of ultraviolet rays.

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UVA (Ultraviolet A)

Ultraviolet rays with the longest wavelength pass through glass windows consistently regardless of the season.

Due to its long wavelength, it affects the dermis layer of the skin, causing skin problems such as wrinkles, loss of elasticity, and pigmentation.

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UVB (Ultraviolet B)

It occurs most frequently in the summer when the sunlight is strong, due to medium-length ultraviolet rays.

Prolonged exposure may cause the skin to turn red, and in severe cases, blisters may form, such as peeling.

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PA

PA (Protection of A)

PA is the UVA blocking index.

Unlike SPF, which is represented by a number, PA indicates the blocking rate using the number of plus signs.

The more plus signs there are, such as PA+, PA++, PA+++, and PA++++, the higher the blocking effect.

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PA+ is sufficient for daily use, but,

PA++ or higher is recommended for prolonged outdoor activities.

For places with strong UV exposure, such as the sea or ski resorts, we recommend PA+++ or higher!

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SPF

SPF (Sun Protection Factor)

SPF is a protection factor that blocks UVB rays.

It is indicated in units such as 15, 30, and 50, and the higher the number, the higher the blocking effect.

SPF 15 sunscreen means that the amount of ultraviolet rays reaching the skin is reduced to one-fifteenth.

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SPF 15 is sufficient for daily use, but,

For prolonged outdoor activities, an SPF of 30 or higher is recommended.

SPF 50 is recommended for places with strong UV exposure, such as the sea or ski resorts!

 

 

 

mineral sunscreen

Mineral sunscreens are made of materials such as titanium dioxide and zinc oxide.

Natural mineral ingredients protect against UV rays on the skin surface

It blocks by physically reflecting it.

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Organic sunscreen (chemical filter)

Organic sunscreens contain chemically synthesized ingredients such as oxybenzone, avobenzone, and benzophenone derivatives.

It protects the skin by converting accumulated UV rays into thermal energy.

 

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The source of this post is: https://blog.naver.com/madongeee/223109815984~!