How much SPF and PA should be selected for sunscreen

Speaking of sunscreen, it is indispensable in summer and is super important. So what is the appropriate SPF of this sunscreen? How to choose between SPF and PA sunscreen?

How much SPF is suitable for sunscreen

SPF targets UVB, and the number behind it represents how many times the sunburn time can be extended.

For example, the skin of Asians will normally get tanned and sunburned after 15 minutes in the sun.

Using SPF15 UV protection products can provide about 225 minutes (15 minutes x SPF15) of sun protection time.

30+ means 30 times of 15 minutes, 15*30=450 minutes, which is 7 and a half hours. SPF50 sunscreen represents 15×50=750 minutes.

30+ is about 8 hours, so 30+ is enough for most parts of China. For daily care, shopping, or window shopping, you can choose sunscreen products with SPF 5-8.

When going out for fun, you can choose sunscreen products with SPF10-15. Use a waterproof sunscreen of SPF 20-30 when swimming or sunbathing.

How to choose SPF and PA

Generally speaking, if it is cloudy or you are indoors, you can choose SPF15, PA+ products.

When doing outdoor sports or being exposed to strong sunlight for a short period of time, such as when commuting to get off work, it is necessary to choose products with SPF30, PA++.

When exercising outdoors for long periods of time in the summer or in plateau areas, it is best to choose a sunscreen with the strongest possible sun protection, such as SPF30+, PA+++, and apply it every 1 or 2 hours to effectively protect the skin and limbs from damage by ultraviolet rays.

That’s all about SPF sunscreen. Now you know how to choose between SPF and PA!