What is the sun protection index of sunscreen
The degree of sun protection of a sunscreen depends on the sunscreen’s sun protection index, which is usually indicated on the sunscreen. So what do you think of the sunscreen’s sun protection index? Is a sunscreen higher sun protection index?
There are two characteristics of sun protection index, SPF and PA.
UVA and UVB are two bands of ultraviolet.
The SPF value is represented by numbers. The larger the number, the stronger the ability to protect against UVB, and the PA value represents the ability to protect against UVA. PA +, PA ++, and PA +++ are used. The more + signs, the stronger the protective ability.
You just have to remember two:
SPF, UVB, sun protection
PA, UVA, sun protection
The sun protection index refers to the SPF value of the sunscreen, which is the level of sun protection performance of the sunscreen. In the hot summer sun, MMs are afraid of tanning. It is important to use sunscreen correctly. However, the higher the sunscreen index The better?
The higher the sun protection index of the sunscreen, the better the sun protection effect. It should be used in different occasions, and no sunscreen with a high sun protection index is needed indoors.
The correct way to use sunscreen is to apply it half an hour to one hour before going out and regularly apply it outdoors. If it exceeds the safe period of sun exposure, it will still be sunburned and tanned. However, the higher the sun protection index, the better? Many friends don’t understand this.
Don’t blindly choose a sunscreen with a high sun protection index. The higher the SPF index, the more protection it gives, but the sunscreen with a high sun protection index will stimulate the skin more, so it is most important to choose a sun protection index suitable for you of!
The sun protection factor refers to the SPF sun protection factor of the sunscreen, that is, the level of sun protection effect that sunscreen products can play. How much is the sun protection index suitable? It mainly depends on your skin type and the situation of everyone going out.
The appropriate sun protection index is an important criterion for measuring the sun protection effect of sunscreens. The higher the SPF value, the longer the sun protection time. However, the higher the sun protection index, the better. In fact, it must also be based on individual skin quality, sun reaction, Consider skin color, activity and sweating.In general, the daily protection and maintenance of Orientals only needs to choose a sun protection factor of about SPF15.
Sun protection can be said to be the most basic maintenance work, because skin aging is 100% related to UV damage! Choose a sun protection index that suits you and use it regardless of season, age, and day to achieve the purpose of sun protection.
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