What is the appropriate SPF of sunscreen?

Sunscreen is something that many girls need to use every day, not only in summer, but also in other seasons. However, many girls may be hesitant when choosing sunscreen, because the sun protection values ​​of various brands of sunscreen are different. If you choose the wrong one, it may not be able to provide sun protection. In fact, the amount of sun protection provided by sunscreen depends on personal choice. As long as it's not too low it's fine.

1. What is the best sun protection index?

There is no best value for the sun protection index, but only a most suitable value. Not only the place of use should be appropriate, but also the people who use it should be appropriate. Generally speaking, if you work indoors and do not go out much, you should use sunscreen with an SPF of SPF15 to SPF20; if you need to travel outside for work or during holidays, you should use sunscreen with an SPF of SPF20 or above; if you travel to a beach or tropical area, you should use sunscreen with an SPF of SPF30 or above. During daily commuting, the sunscreen you use should depend on your skin color. People with fair skin are best to choose sunscreen with an SPF of SPF30 or above to prevent the formation of spots, while people with darker skin can choose sunscreen with an SPF of SPF15. In addition, people who are sensitive to light should also choose sunscreen with a relatively high SPF.

2. Use different sunscreens at different times

In daily life, it is recommended that you prepare at least 2 to 3 products with different SPFs, and then use different sunscreens at different times. After all, the needs of different environments are different. If you always use products with a low SPF, your skin will easily get sunburned and tanned under excessive sunlight. If you always use products with a high SPF, the sunscreen in the products will easily damage your skin, so you need to use them appropriately.

3. The thickness of the coating is also important

Even if you choose a product with a sufficient SPF, you must apply it thickly enough, because only when you reach the prescribed usage of 2 mg per square centimeter can your sunscreen achieve the SPF it labels. Even if the sunscreen has an SPF of more than 30, if you only apply a thin layer, it will probably only provide a sun protection effect of SPF 4.