How to choose sunscreen in summer

Sunscreen is an item that everyone is familiar with. Sunscreen has a very good effect on protecting people's skin. Regular use of sunscreen can reduce the chance of skin diseases, and it can also play a role in whitening and shrinking pores. Sunscreen has always been the skin care secret of many celebrities, especially in summer when the sunlight is very strong and the ultraviolet rays are particularly strong. Applying sunscreen can better protect yourself. So how to choose sunscreen in summer?

1. Choose sunscreen according to occasion needs

The common sun protection index ranges from SPF15 to 50, and the PA index is also divided into three levels. It does not mean that the higher the SPF, the better. High-factor sunscreen will invisibly increase the burden on the skin, so be sure to choose according to your sun protection needs! The number of "+" after PA indicates the sun protection level. The more "+" there are, the stronger the sun protection ability is. Through the meaning of the SPF label, you can roughly calculate the effective sun protection time. Our skin has a time to react to sunlight, and this time is called the "minimum erythema dose". For Asian girls, it is generally around 15 minutes. Just calculate how much SPF product you need and go out! Multiply 15 minutes by the SPF index, and you get the safe time range after applying this sunscreen. Taking SPF10 as an example, the multiplication result is 150, which means that theoretically you can stay in the sun for 150 minutes, and so on. If you only live in the city, generally speaking, SPF15 and PA+ levels are sufficient to safely protect your skin from sunburn. As the time of outdoor activities increases, the SPF index should be increased accordingly. If you plan to go on vacation to the beach for a long time, you should at least prepare a high-quality sunscreen with SPF50, PA+++.

2. Choose sunscreen according to skin characteristics

Sunscreens on the market today are basically divided into three categories: physical sunscreen, chemical sunscreen, and a combination of physical and chemical sunscreen.

(1) The principle of physical sunscreen is that reflective ions form a layer of protection on the skin, which blocks ultraviolet rays through reflection. These ingredients are not absorbed by the skin and have a relatively small burden, making them especially suitable for sensitive skin. The main ingredients are titanium dioxide and zinc oxide, so just look for their names in the ingredient list when buying;

(2) The principle of chemical sunscreen is that chemical substances combine with skin cells, converting the absorbed ultraviolet rays into heat and releasing them. Generally, you should wait 20 minutes after applying chemical sunscreen before going out. So when you see this "friendly reminder", you can easily distinguish that chemical sunscreen feels more refreshing on the skin than physical sunscreen, but the chance of allergy is also higher, so it is suitable for general healthy skin;

(3) Physical and chemical mixed sunscreen is the most popular type of sunscreen on the market. It combines the advantages of both types of sunscreen and is suitable for almost all healthy skin types.

How to choose sunscreen in summer? Sunscreen has many uses for people, especially in summer. Some people have very fragile skin and may suffer from skin allergies if they are not careful. Therefore, the use of sunscreen becomes very necessary. People must pay attention when buying sunscreen and choose one that suits their skin, otherwise it will have counterproductive results and cause greater damage to their skin.